# pdgfootnote

pdgid: S067P23
text:
ASHIE 2004 obtained this result from the L(flight length)/E(estimated neutrino energy) distribution of nu_{{mu}} disappearance probability, using the Super-Kamiokande-I 1489 live-day atmospheric neutrino data.


pdgid: S067P23
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There are several islands of allowed region from this K2K analysis, extending to high values of Delta(m**2). We only include the one that overlaps atmospheric neutrino analyses. The best fit is for maximal mixing.


pdgid: S067P23
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AMBROSIO 2003 obtained this result on the basis of the ratio R = N(low)/N(high), where N(low) and N(high) are the number of upward through-going muon events with reconstructed neutrino energy < 30 GeV and > 130 GeV, respectively. The data came from the full detector run started in 1994. The method of FELDMAN 1998 is used to obtain the limits.


pdgid: S067P23
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AMBROSIO 2003 obtained this result by using the ratio R and the angular distribution of the upward through-going muons.  R is given in the previous note and the angular distribution is reported in AMBROSIO 2001. The method of FELDMAN 1998 is used to obtain the limits. The best fit is to maximal mixing.


pdgid: S067P23
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SANCHEZ 2003 is based on an exposure of 5.9 kton yr.  The result is obtained using a likelihood analysis of the neutrino L/E distribution for a selection mu flavor sample while the e-flavor sample provides flux normalization.  The method of FELDMAN 1998 is used to obtain the allowed region. The best fit is sin**2(2theta) = 0.97.


pdgid: S067P23
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AMBROSIO 2001 result is based on the angular distribution of upward through-going muon tracks with E_{{mu}} > 1 GeV.  The data came from three different detector configurations, but the statistics is largely dominated by the full detector run, from May 1994 to December 2000. The total live time, normalized to the full detector configuration is 6.17 years. The best fit is obtained outside the physical region.  The method of FELDMAN 1998 is used to obtain the limits.  The best fit is for maximal mixing.


pdgid: S067P23
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AMBROSIO 2001 result is based on the angular distribution and normalization of upward through-going muon tracks with E_{{mu}} > 1 GeV. See the previous footnote.


pdgid: S067P23
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FUKUDA 1999C obtained this result from a total of 537 live days of upward through-going muon data in Super-Kamiokande between April 1996 to January 1998.  With a threshold of E_{{mu}} > 1.6 GeV, the observed flux is 1.74+-0.07+-0.02E-13 cm**-2s**-1sr**-1. The best fit is sin**2(2theta) = 0.95.


pdgid: S067P23
text:
FUKUDA 1999D obtained this result from a simultaneous fitting to zenith angle distributions  of upward-stopping and through-going muons.  The flux of upward-stopping muons of minimum energy of 1.6 GeV measured between April 1996 and January 1998 is 0.39+-0.04+-0.02E-13 cm**-2s**-1sr**-1.  This is compared to the expected flux of (0.73+-0.16 (theoretical error))x10**-13 cm**-2s**-1sr**-1. The best fit is to maximal mixing.


pdgid: S067P23
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FUKUDA 1999D obtained this result from the zenith dependence of the upward-stopping/through-going flux ratio. The best fit is to maximal mixing.


pdgid: S067P23
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FUKUDA 1998C obtained this result by an analysis of 33.0 kton yr atmospheric neutrino data. The best fit is for maximal mixing.


pdgid: S067P23
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HATAKEYAMA 1998 obtained this result from a total of 2456 live days of upward-going muon data in Kamiokande between December 1985 and May 1995. With a threshold of E_{{mu}} > 1.6 GeV, the observed flux of upward through-going muons is 1.94+-0.10+0.07-0.06E-13 cm**-2s**-1sr**-1. This is compared to the expected flux of (2.46+-0.54 (theoretical error))x10**-13 cm**-2s**-1sr**-1. The best fit is for maximal mixing.


pdgid: S067P23
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HATAKEYAMA 1998 obtained this result from a combined analysis of Kamiokande contained events (FUKUDA 1994) and upward going muon events. The best fit is sin**2(2theta) = 0.95.


pdgid: S067P23
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FUKUDA 1994 obtained the result by a combined analysis of sub- and multi-GeV atmospheric neutrino events in Kamiokande. The best fit is for maximal mixing.


pdgid: S067DM1
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AIELLO 2024 reports Deltam(31)**2 = 2.18+0.25-0.35E-3 eV**2 for  normal mass ordering. We convert to Deltam(32)**2 using PDG 2024 value of  Deltam(21)**2 = 7.53+-0.18E-5 eV**2.


pdgid: S067DM1
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AIELLO 2024 reports Deltam(31)**2 = -2.25E-3 to -1.76E-3 eV**2 at  68% CL for inverted mass ordering. We convert to Deltam(32)**2 using PDG 2024  value of Deltam(21)**2 = 7.53+-0.18E-5 eV**2. The inverted mass ordering  is disfavored with a p-value of 0.25.


pdgid: S067DM1
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AN 2024A report results from 1958 days of data taking with the Daya Bay experiment. This  analysis makes use of neutron capture on protons and is independent of previous results in AN 2023,  utilizing neutron capture on Gd.


pdgid: S067DM1
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ABE 2023F reports Deltam(13)**2=2.463+0.042-0.056E-3 eV**2 for  inverted mass ordering. We convert to Deltam(32)**2 using PDG 2023 value of  Deltam(21)**2 = 7.53+-0.18E-5 eV**2.


pdgid: S067DM1
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AN 2023 reports results derived from the complete data set collected by the Daya-Bay  experiment, corresponding to 3158 days of operation, resulting in 5.55E6 nubar_{{e}} candidate  events. Solar oscillation parameters are fixed in the analysis to sin**2(theta_{{12}}()) =  0.307+-0.013, Deltam(21)**2 = 7.53+-0.18E-5 eV**2 from PDG 2020.  Supersedes ADEY 2018A.


pdgid: S067DM1
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ACERO 2022 uses data from Jun 29, 2016 to Feb 26, 2019 (12.5E20 POT) and Feb 6, 2014 to  Mar 20, 2020 (13.6E20 POT). For normal mass ordering and theta_{{23}} octant I (lower octant),  best fit is 0.00239 eV**2; for inverted mass ordering and octant I, best fit is -0.00244  eV**2. Uncertainties are reported relative to the global minima in normal mass ordering.  Supersedes ACERO 2019.


pdgid: S067DM1
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BAK 2018 reports results of the RENO experiment using about 2200 live-days of data taken with  detectors placed at 410.6 and 1445.7 m from reactors of the Hanbit Nuclear Power Plant. We convert  the results to Deltam(32)**2 using the PDG 2018 values of sin**2(theta_{{12}})  = 0.307+0.013-0.012 and Deltam(21)**2 = 7.53+-0.18E-5 eV**2.  Supersedes SEO 2018.


pdgid: S067DM1
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ABE 2025 reports |Deltam(13)**2|=2.480+0.052-0.048E-3 eV**2 for  inverted mass ordering. We convert to Deltam(32)**2 using PDG 2024 value of  Deltam(21)**2 = 7.53+-0.18E-5 eV**2.


pdgid: S067DM1
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ABE 2023D uses the same dataset as ABE 2023F. The measurement of  Deltam(32)**2 is performed independently for nu_{{mu}} and nubar_{{mu}}.


pdgid: S067DM1
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ABE 2020F reports Deltam(13)**2=2.43+-0.07E-3 eV**2 for inverted  mass ordering. We convert to Deltam(32)**2 using PDG 2020 value of  Deltam(21)**2 = 7.53+-0.18E-5 eV**2.


pdgid: S067DM1
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ACERO 2019 is based on a sample size of 12.33E20 protons on target. The fit combines   both antineutrino and neutrino data to extract the oscillation parameters. The results favor the   normal mass ordering by 1.9 sigma and theta(23) values in octant II by 1.6   sigma. Superseded by ACERO 2022.


pdgid: S067DM1
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AARTSEN 2018A uses three years (April 2012 - May 2015) of neutrino data from full  sky with reconstructed energies between 5.6 and 56 GeV, measured with the low-energy subdetector  DeepCore of the IceCube neutrino telescope. AARTSEN 2018A also reports the best fit values  for the inverted mass ordering as Deltam(32)**2 = -2.32E-3 eV**2 and  sin**2(theta_{{23}}()) = 0.51. Uncertainties for the inverted mass ordering fits were not provided. Supersedes AARTSEN 2015A.


pdgid: S067DM1
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ABE 2018B uses 328 kton.years of Super-Kamiokande I-IV atmospheric neutrino data to  obtain this result. The fit is performed over the four parameters, Deltam(32)**2,  sin**2(theta_{{23}}), sin**2(theta_{{13}}), and delta, while the solar parameters are fixed  to Deltam(21)**2= 7.53+-0.18E-5 eV**2 and sin**2(theta_{{12}}) = 0.304+-0.014.


pdgid: S067DM1
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ABE 2018G reports Deltam(13)**2=2.432+-0.070E-3 eV**2 for inverted  mass ordering. We convert to Deltam(32)**2 using PDG 2018 value of  Deltam(21)**2=7.53+-0.18E-5 eV**2.


pdgid: S067DM1
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ACERO 2018 performs a joint fit to the data for nu_{{mu}} disappearance and nu_{{e}}  appearance. The overall best fit favors normal mass ordering and theta_{{23}}() in octant II. No 1sigma confidence intervals are presented for the inverted mass ordering scenarios.  Superseded by ACERO 2019.


pdgid: S067DM1
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ADEY 2018A reports results from analysis of 1958 days of data taking with the Daya-Bay  experiment, with 3.9E6  nubar_{{e}} candidates. The fit to the data gives  Deltam(ee)**2 = 2.522+0.068-0.070E-3 eV**2. Solar oscillation parameters  are fixed in the analysis using the global averages, sin**2(theta_{{12}}()) = 0.307+0.013-0.012,  Deltam(21)**2 = 7.53+-0.18E-5 eV**2, from PDG 2018. Supersedes  AN 2017A.


pdgid: S067DM1
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SEO 2018 reports result of the RENO experiment from a rate and shape analysis of 500 days of  data. A simultaneous fit to theta_{{13}} and Deltam(ee)**2 yields  Deltam(ee)**2 = 2.62+0.21-0.23+0.12-0.13E-3 eV**2. We convert the  results to Deltam(32)**2 using the PDG 2018 values of sin**2(theta_{{12}}) and  Deltam(21)**2. SEO 2018 is a detailed description of the results published in  CHOI 2016, which it supersedes. Superseded by BAK 2018


pdgid: S067DM1
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ABE 2017F confidence intervals are obtained using a frequentist analysis including theta_{{13}} constraint from reactor experiments. Bayesian intervals based on Markov Chain Monte Carlo method are also provided by the authors. Superseded by ABE 2018G.


pdgid: S067DM1
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AN 2017A report results from combined rate and spectral shape analysis of 1230 days of data  taken with the Daya Bay reactor experiment. The data set contains more than 2.5E6 inverse  beta-decay events with neutron capture on Gd. The fit to the data gives  Delta(ee)**2=2.50+-0.06+-0.06E-3 eV. Superseded by ADEY 2018A.


pdgid: S067DM1
text:
CHOI 2016 reports result of the RENO experiment from a rate and shape analysis of 500 days of  data. A simultaneous fit to theta(13) and Deltam(ee)**2 yields  Deltam(ee)**2 = 2.62+0.21-0.23+0.12-0.13E-3 eV. We convert the results to  Deltam(32)**2 using PDG 2018 values of sin**2(theta_{{12}}()) and  Deltam(21)**2.


pdgid: S067DM1
text:
AARTSEN 2015A obtains this result by a three-neutrino oscillation analysis using 10 -- 100 GeV  muon neutrino sample from a total of 953 days of measurements with the low-energy subdetector  DeepCore of the IceCube neutrino telescope. Superseded by AARTSEN 2018A.


pdgid: S067DM1
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AGAFONOVA 2015A result is based on 5 nu_mu --> nu_tau appearance candidates with an  expected background of 0.25+-0.05 events. The best fit is for  Deltam(32)**2=3.3E-3 eV**2.


pdgid: S067DM1
text:
AN 2015 uses all eight identical detectors, with four placed near the reactor cores and the remaining four at the far hall to determine prompt energy spectra. The results correspond to the  exposure of 6.9E5 GW(th)-ton-days. They derive Deltam(ee)**2 = 2.42+-0.11E-3  eV**2. Assuming the normal (inverted) ordering, the fitted Deltam(32)**2 =  2.37+-0.11E-3 (2.47+-0.11E-3) eV**2. Superseded by AN 2017A.


pdgid: S067DM1
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ABE 2014 results are based on nu_{{mu}} disappearance using three-neutrino oscillation fit.  The confidence intervals are derived from one dimensional profiled likelihoods. In ABE 2014  the inverted mass ordering result is reported as Deltam(13)**2 = 2.48+-0.10E-3  eV**2 which we converted to Deltam(32)**2 by adding PDG 2014 value of  Deltam(21)**2 = 7.53+-0.18E-5 eV**2. Superseded by ABE 2017C.


pdgid: S067DM1
text:
ADAMSON 2014 uses a complete set of accelerator and atmospheric data. The analysis combines  The analysis combines the nu_{{mu}} disappearance and nu_{{e}} appearance data using  three-neutrino oscillation fit.  The fit results are obtained for normal and inverted mass ordering  assumptions.


pdgid: S067DM1
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AN 2014 uses six identical detectors, with three placed near the reactor cores (flux-weighted baselines of 512 and 561 m) and the remaining three at the far hall (at the flux averaged  distance  of 1579 m from all six reactor cores) to determine prompt energy spectra and derive   Deltam(ee)**2 = 2.59+0.19-0.20E-3 eV**2. Assuming the normal (inverted)   ordering, the fitted Deltam(32)**2 = 2.54+0.19-0.20E-3 (2.64+0.19-0.20E-3)   eV**2. Superseded by AN 2015.


pdgid: S067DM1
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FORERO 2014 performs a global fit to Deltam(31)**2 using solar, reactor,  long-baseline accelerator, and atmospheric neutrino data.


pdgid: S067DM1
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The value for normal mass ordering is actually a measurement of Deltamass**2(31) which differs from  Deltamass**2(32) by a much smaller value of Deltamass**2(12).


pdgid: S067DM1
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GONZALEZ-GARCIA 2014 result comes from a frequentist global fit. The corresponding Bayesian global fit to the same data results are reported in BERGSTROM 2015 as 2.460+-0.046E-3  eV**2 for normal and 2.445+0.047-0.045E-3 eV**2 for inverted mass ordering.


pdgid: S067DM1
text:
AARTSEN 2013B obtained this result by a two-neutrino oscillation analysis using 20 -- 100 GeV  muon neutrino sample from a total of 318.9 days of live-time measurement with the low-energy subdetector DeepCore of the IceCube neutrino telescope.


pdgid: S067DM1
text:
ADAMSON 2013B obtained this result from nu_{{mu}} and nubar_{{mu}} disappearance using nu_{{mu}} (10.71E20 POT) and nubar_{{mu}} (3.36E20 POT) beams, and atmospheric (37.88 kton-years) data from MINOS. The fit assumed two-flavor neutrino hypothesis and identical nu_{{mu}} and nubar_{{mu}} oscillation parameters.


pdgid: S067DM1
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ABE 2012A obtained this result by a two-neutrino oscillation analysis. The best-fit point is Deltam(32)**2 = 2.65E-3 eV**2.


pdgid: S067DM1
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The 90% single-parameter confidence interval at the best fit point is Deltam**2 = 0.0019+-0.0004 eV**2.


pdgid: S067DM1
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ADAMSON 2012B obtained this result by a two-neutrino oscillation analysis of the L/E distribution using 37.9 kton.yr atmospheric neutrino data with the MINOS far detector.


pdgid: S067DM1
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The data are separated into pure samples of nus and nubars, and separate oscillation parameters for nus and nubars are fit to the data. The best fit point is (Deltam**2, sin**2(2theta)) = (0.0022 eV**2, 0.99) and  (Deltambar**2, sin**2(2thetabar)) = (0.0016 eV**2, 1.00). The quoted result is taken from the 90% C.L.  contour in the (Deltam**2, sin**2(2theta)) plane obtained by minimizing the four parameter log-likelihood  function with respect to the other oscillation parameters.


pdgid: S067DM1
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ADRIAN-MARTINEZ 2012 measured the oscillation parameters of atmospheric neutrinos with the  ANTARES deep sea neutrino telescope using the data taken from 2007 to 2010 (863 days of total live  time). Superseded by ALBERT 2019


pdgid: S067DM1
text:
ABE 2011C obtained this result by a two-neutrino oscillation analysis with separate mixing parameters between neutrinos and antineutrinos, using the Super-Kamiokande-I+II+III atmospheric neutrino data. The corresponding 90% CL neutrino oscillation parameter range obtained from this analysis is Deltamass**2() = 1.7 -- 3.0E-3 eV**2.


pdgid: S067DM1
text:
ADAMSON 2011C obtains this result based on a study of antineutrinos in a neutrino beam  and assumes maximal mixing in the two-flavor approximation.


pdgid: S067DM1
text:
WENDELL 2010 obtained this result by a three-neutrino oscillation analysis with one mass scale dominance (Deltam(21)**2 = 0) using the Super-Kamiokande-I+II+III atmospheric neutrino data, and updates the HOSAKA 2006A result.


pdgid: S067DM1
text:
ALLISON 2005 result is based on an atmospheric neutrino observation with an exposure of 5.9 kton yr. From a two-flavor oscillation analysis the best-fit point is Delta(m**2) = 0.0017 eV**2  and sin**2(2 theta) = 0.97.


pdgid: S067DM1
text:
ASHIE 2005 obtained this result by a two-neutrino oscillation analysis using 92 kton yr atmospheric neutrino data from the complete Super-Kamiokande I running period. The best fit is for Delta = 2.1E-3 eV**2.


pdgid: S067DM1
text:
AMBROSIO 2004 obtained this result, without using the absolute normalization of the neutrino flux, by combining the angular distribution of upward through-going muon tracks with E_{{mu}} > 1 GeV, N(low) and N(high), and the numbers of InDown + UpStop and InUp events.  Here, N(low) and N(high) are the number of events with reconstructed neutrino energies < 30 GeV and > 130 GeV, respectively.  InDown and InUp represent events with downward and upward-going tracks starting inside the detector due to neutrino interactions, while UpStop represents entering upward-going tracks which stop in the detector. The best fit is for Delta(m**2) = 2.3E-3 eV**2.


pdgid: S067DM1
text:
ASHIE 2004 obtained this result from the L(flight length)/E(estimated neutrino energy)  distribution of nu_{{mu}} disappearance probability, using the Super-Kamiokande-I 1489 live-day  atmospheric neutrino data. The best fit is for Delta(m**2) = 2.4E-3 eV**2.


pdgid: S067DM1
text:
There are several islands of allowed region from this K2K analysis, extending to high values of Delta(m**2). We only include the one that overlaps atmospheric neutrino analyses. The best fit is for Delta(m**2) = 2.8E-3 eV**2.


pdgid: S067DM1
text:
AMBROSIO 2003 obtained this result on the basis of the ratio R = N(low)/N(high), where N(low) and N(high) are the number of upward through-going muon events with reconstructed neutrino energy < 30 GeV and > 130 GeV, respectively. The data came from the full detector run started in 1994.  The method of FELDMAN 1998 is used to obtain the limits.  The best fit is for Delta(m**2) = 2.5E-3 eV**2.


pdgid: S067DM1
text:
AMBROSIO 2003 obtained this result by using the ratio R and the angular distribution of the upward through-going muons.  R is given in the previous note and the angular distribution is reported in AMBROSIO 2001. The method of FELDMAN 1998 is used to obtain the limits. The best fit is for Delta(m**2) = 2.5E-3 eV**2.


pdgid: S067DM1
text:
SANCHEZ 2003 is based on an exposure of 5.9 kton yr.  The result is obtained using a likelihood analysis of the neutrino L/E distribution for a selection mu flavor sample while the e-flavor sample provides flux normalization.  The method of FELDMAN 1998 is used to obtain the allowed region. The best fit is for Delta(m**2) = 5.2E-3 eV**2.


pdgid: S067DM1
text:
AMBROSIO 2001 result is based on the angular distribution of upward through-going muon tracks with E_{{mu}} > 1 GeV.  The data came from three different detector configurations, but the statistics is largely dominated by the full detector run, from May 1994 to December 2000. The total live time, normalized to the full detector configuration is 6.17 years. The best fit is obtained outside the physical region.  The method of FELDMAN 1998 is used to obtain the limits.


pdgid: S067DM1
text:
FUKUDA 1999C obtained this result from a total of 537 live days of upward through-going muon data in Super-Kamiokande between April 1996 to January 1998.  With a threshold of E_{{mu}} > 1.6 GeV, the observed flux is 1.74+-0.07+-0.02E-13 cm**-2s**-1sr**-1. The best fit is for Delta(m**2) = 5.9E-3 eV**2.


pdgid: S067DM1
text:
FUKUDA 1999D obtained this result from a simultaneous fitting to zenith angle distributions of upward-stopping and through-going muons.  The flux of upward-stopping muons of minimum energy of 1.6 GeV measured between April 1996 and January 1998 is 0.39+-0.04+-0.02E-13 cm**-2s**-1sr**-1.  This is compared to the expected flux of (0.73+-0.16 (theoretical error))x10**-13 cm**-2s**-1sr**-1. The best fit is for Delta(m**2) = 3.9E-3 eV**2.


pdgid: S067DM1
text:
FUKUDA 1999D obtained this result from the zenith dependence of the upward-stopping/through-going flux ratio. The best fit is for Delta(m**2) = 3.1E-3 eV**2.


pdgid: S067DM1
text:
FUKUDA 1998C obtained this result by an analysis of 33.0 kton yr atmospheric neutrino data. The best fit is for Delta(m**2) = 2.2E-3 eV**2.


pdgid: S067DM1
text:
HATAKEYAMA 1998 obtained this result from a total of 2456 live days of upward-going muon data in Kamiokande between December 1985 and May 1995. With a threshold of E_{{mu}} > 1.6 GeV, the observed flux of upward through-going muons is 1.94+-0.10+0.07-0.06E-13 cm**-2s**-1sr**-1. This is compared to the expected flux of (2.46+-0.54 (theoretical error))x10**-13 cm**-2s**-1sr**-1. The best fit is for Delta(m**2) = 2.2E-3 eV**2.


pdgid: S067DM1
text:
HATAKEYAMA 1998 obtained this result from a combined analysis of Kamiokande contained events (FUKUDA 1994) and upward going muon events. The best fit is for Delta(m**2) = 13E-3 eV**2.


pdgid: S067DM1
text:
FUKUDA 1994 obtained the result by a combined analysis of sub- and multi-GeV atmospheric neutrino events in Kamiokande. The best fit is for Delta(m**2) = 16E-3 eV**2.


pdgid: S067P13
text:
ACERO 2024 reanalyzed the NOvA dataset of 13.6E20 POT in neutrino beam node and 12.5E20 POT  in antineutrino mode using Bayesian statistical approach. The reported value  sin**2(2theta_{{13}})=0.087+0.020-0.016 marginalized over both mass orderings.


pdgid: S067P13
text:
AN 2024A performed a combined analysis of data taken by the Daya Bay experiment. 1958 days  use neutron capture on protons, 3158 days neutron capture on Gd, as reported in AN 2023.  Combining these data sets results in 8% error reduction compared to AN 2023.


pdgid: S067P13
text:
ABE 2023F results are based on data collected between 2010 and 2020 in (anti)neutrino mode  and include a neutrino beam exposure of 1.97E21 (1.63E21) protons on target.


pdgid: S067P13
text:
DE-KERRET 2020 uses 481 days of data from single detector operation and also 384 days of data  with both near and far detectors operating. A rate and shape analysis is performed on combined  neutron captures on H and Gd. Supersedes ABE 2016B.


pdgid: S067P13
text:
SHIN 2020 uses the RENO detector and 1500 live days of data. The near (far) detector observed  567,690 (90,747) nubar_{{e}} candidate events with a delayed neutron capture on hydrogen. The  extracted value of sin**2(theta_{{13}}) is consistent with the previous analysis with neutron  capture on Gd in BAK 2018.


pdgid: S067P13
text:
BAK 2018 reports results of the RENO experiment using about 2200 live-days of data taken with  detectors placed at 410.6 and 1445.7 m from reactors of the Hanbit Nuclear Power Plant. Supersedes  SEO 2018.


pdgid: S067P13
text:
ABRAHAO 2021 uses 865 days of data collected in both near and far detectors with at least one  reactor in operation. The analysis is based on a background model independent approach, so called  Reactor Rate Modulation, to determine the mixing angle theta_{{13}}. Adding the background model  reduces the uncertainty to 0.0041. Supersedes ABE 2016B.


pdgid: S067P13
text:
ADEY 2018A reports results from analysis of 1958 days of data taking with the Daya-Bay  experiment, with 3.9E6 nubar_{{e}} candidates. The fit to the data gives  Deltam(ee)**2 = 2.522+0.068-0.070E-3 eV**2. Solar oscillation parameters  are fixed in the analysis using the global averages, sin**2(theta_{{12}}()) = 0.307+0.013-0.012,  Deltam(21)**2 = 7.53+-0.18E-5 eV**2, from PDG 2018. Supersedes  AN 2017A.


pdgid: S067P13
text:
AGAFONOVA 2018A reports sin**2(2theta_{{13}}()) < 0.43 at 90% C.L. The result on the sterile neutrino search in the context of 3+1 model is also reported. A  90% C.L. upper limit on sin**2(2thet)(mu e)) = 0.021 for  Deltam(41)**2 >= 0.1 eV**2 is set.


pdgid: S067P13
text:
SEO 2018 reports results of the RENO experiment using about 500 days of data, performing a  rate and shape analysis. Compared to AHN 2012, a significant reduction of the systematic  uncertainties is reported. A 3% excess of events near 5 MeV of the prompt energy is observed.  SEO 2018 is a detailed description of the results published in CHOI 2016, which it  supersedes. Superseded by BAK 2018.


pdgid: S067P13
text:
Using T2K data only. For inverted mass ordering, all values of theta_{{13}}() are ruled out at  68% CL.


pdgid: S067P13
text:
AN 2017A reports results from combined rate and spectral shape analysis of 1230 days of data  taken with the Daya Bay reactor experiment. The data set contains more than 2.5E6 inverse  beta-decay events with neutron capture on Gd. A simultaneous fit to theta_{{13}}() and  Deltam(ee)**2 is performed. Superseded by ADEY 2018A.


pdgid: S067P13
text:
ABE 2016B uses 455.57 live days of data from a detector 1050 m away from two reactor cores of  the Chooz nuclear power station, to determine the mixing parameter sin**2(2theta_{{13}}()). This  analysis uses 7.15 reactor-off days for constraining backgrounds. A rate and shape analysis is  performed on combined neutron captures on H and Gd. Supersedes ABE 2014H and  ABE 2013C.


pdgid: S067P13
text:
AN 2016A uses data from the eight antineutrino detectors (404 days) and six antineutrino  detectors (217 days) runs to determine the mixing parameter sin**2(2theta_{{13}}()) using the  neutron capture on H only. Supersedes AN 2014B.


pdgid: S067P13
text:
CHOI 2016 reports results of the RENO experiment using about 500 days of data, performing a  rate and shape analysis. Compared to AHN 2012, a significant reduction of the systematic  uncertainties is reported. A 3% excess of events near 5 MeV of the prompt energy is observed.  Supersedes AHN 2012.


pdgid: S067P13
text:
AN 2015 uses all eight identical detectors, with four placed near the reactor cores and the remaining four at the far hall to determine the mixing angle theta(13) using the nubar_{{e}} observed interaction rates with neutron capture on Gd and energy spectra. The result corresponds to the exposure of 6.9E5 GW(th)-ton-days. Superseded by AN 2017A.


pdgid: S067P13
text:
ABE 2014A uses 467.9 live days of one detector, 1050 m away from two reactor cores of the Chooz nuclear power station, to determine the mixing parameter sin**2(2 theta_{{13}}()). The Bugey4 data (DECLAIS 1994) is used to constrain the neutrino flux. The data set includes 7.24 reactor-off days. A "rate-modulation" analysis is performed. Supercedes ABE 2012B.


pdgid: S067P13
text:
ABE 2014C result is for nu_{{e}} appearance and assumes Deltamass**2(32) =  2.4E-3   eV**2, sin**2( theta(23)) = 0.5, and delta = 0.


pdgid: S067P13
text:
ABE 2014H uses 467.9 live days of one detector, 1050 m away from two reactor cores of the Chooz nuclear power station, to determine the mixing parameter sin**2(2 theta_{{13}}()). The Bugey4 data (DECLAIS 1994) is used to constrain the neutrino flux. The data set includes 7.24 reactor-off days. A rate and shape analysis is performed. Superceded by  ABE 2016B.


pdgid: S067P13
text:
AN 2014 uses six identical detectors, with three placed near the reactor cores (flux-weighted  baselines of 512 and 561 m) and the remaining three at the far hall (at the flux averaged   distance  of 1579 m from all six reactor cores) to determine the mixing angle theta(13)  using the   nubar_{{e}} observed interaction rates with neutron capture on Gd and energy spectra.  Supersedes AN 2013 and superseded by AN 2015.


pdgid: S067P13
text:
AN 2014B uses six identical anti-neutrino detectors with flux-weighted baselines of ~500 m and ~1.6 km to six power reactors. This rate   analysis uses  a 217-day data set and neutron capture on protons (not Gd) only. Deltamass**2(31)= 2.32E-3 eV**2 is assumed.  Superseded by AN 2016A.


pdgid: S067P13
text:
GONZALEZ-GARCIA 2014 result comes from a frequentist global fit. The corresponding Bayesian global fit to the same data results are reported in BERGSTROM 2015 as 2.18+0.10-0.11E-2  eV**2 for normal and 2.19+0.12-0.10E-2 eV**2 for inverted mass ordering.


pdgid: S067P13
text:
ABE 2013C uses delayed neutron capture on hydrogen instead of on Gd used previously. The physical  volume is thus three times larger. The fit is based on the rate and shape analysis as in ABE 2012B. The Bugey4 data (DECLAIS 1994) is used to constrain the neutrino flux.  Superseded by ABE 2016B.


pdgid: S067P13
text:
ADAMSON 2013A results obtained from nu_{{e}} appearance, assuming delta = 0, and sin**2(2 theta(23)) = 0.957.


pdgid: S067P13
text:
AHARMIM 2013 obtained this result by a three-neutrino oscillation analysis with the value of  Deltamass**2(32) fixed to 2.45E-3 eV**2, using global solar neutrino data. AHARMIM 2013 global solar neutrino data include SNO's all-phases-combined analysis results  on the total active B8 neutrino flux and energy-dependent  nu_{{e}} survival  probability parameters, measurements of Cl (CLEVELAND 1998), Ga  (ABDURASHITOV 2009  which contains combined analysis with GNO (ALTMANN 2005 and Ph.D.  thesis of  F. Kaether)),  and Be7 (BELLINI 2011A)  rates, and B8 solar-neutrino recoil electron measurements of SK-I (HOSAKA 2006) zenith,  SK-II (CRAVENS 2008) and SK-III (ABE 2011)  day/night spectra, and Borexino (BELLINI 2010A) spectra. AHARMIM 2013 also reported a result combining global solar and KamLAND data, which is sin**2(2 theta_{{13}}()) = 9.1+2.9-3.1E-2.


pdgid: S067P13
text:
AN 2013 uses six identical detectors, with three placed near the reactor cores (flux-weighted  baselines of 498 and 555 m)  and the remaining  three at the far hall  (at the flux averaged  distance of 1628 m from all six  reactor cores) to determine the nubar_{{e}} interaction rate  ratios. Superseded by AN 2014.


pdgid: S067P13
text:
ABE 2012 determines the nubar_{{e}} interaction rate in a single detector, located 1050 m from the cores of two reactors. A rate and shape analysis is performed. The rate normalization is fixed by the results of the Bugey4  reactor experiment, thus avoiding any dependence on possible very short baseline oscillations. The  value of Deltamass**2(31) = 2.4E-3 eV**2 is used in the analysis.  Superseded by ABE 2012B.


pdgid: S067P13
text:
ABE 2012B determines the neutrino mixing angle theta_{{13}}() using a single detector,  located 1050m  from the cores of two reactors. This result is based on a spectral shape and rate analysis. The Bugey4 data (DECLAIS 1994) is used to constrain the neutrino flux. Superseded by ABE 2014A.


pdgid: S067P13
text:
AHN 2012 uses two identical detectors, placed at flux weighted distances of 408.56 m and 1433.99 m from six reactor cores, to determine the mixing angle theta_{{13}}. This rate-only analysis excludes the no-oscillation hypothesis at 4.9 standard deviations. The value of Deltamass**2(31) = 2.32+0.12-0.08E-3 eV**2 was assumed in the analysis.  Superseded by CHOI 2016.


pdgid: S067P13
text:
AN 2012 uses six identical detectors with three placed near the reactor cores (flux-weighted baselines of 470 m  and 576 m) and the remaining three at the far hall (at the flux averaged distance of 1648 m from all six  reactor cores) to determine the mixing angle theta_{{13}} using the nubar_{{e}} observed interaction rate ratios.  This rate-only analysis excludes the no-oscillation hypothesis at 5.2 standard deviations. The value of Deltamass**2(31)   = 2.32+0.12-0.08E-3 eV**2 was assumed in the analysis. Superseded by AN 2013.


pdgid: S067P13
text:
ABE 2011 obtained this result by a three-neutrino oscillation analysis with the value of Deltamass**2(32)  fixed to 2.4E-3 eV**2, using solar neutrino data including Super-Kamiokande, SNO,  Borexino (ARPESELLA 2008A),  Homestake, GALLEX/GNO, SAGE, and KamLAND data.  This result  implies an upper bound of  sin**2(theta_{{13}})< 0.059 (95% CL) or  sin**2(2theta_{{13}})< 0.22 (95% CL). The normal neutrino mass ordering and CPT  invariance are assumed.


pdgid: S067P13
text:
The quoted limit is for Deltamass**2(32) = 2.4E-3 eV**2,  theta(23) = pi/2, delta = 0, and the normal mass ordering. For other values of  delta, the 68% region spans from 0.03 to 0.25, and the 90% region from 0.02 to 0.32.


pdgid: S067P13
text:
The quoted limit is for Deltamass**2(32) = 2.4E-3 eV**2,  theta(23) = pi/2, delta = 0, and the inverted mass ordering. For other values  of delta, the 68% region spans from 0.04 to 0.30, and the 90% region from 0.02 to  0.39.


pdgid: S067P13
text:
The quoted limit is for Deltamass**2(32) = 2.32E-3 eV**2,  theta(23) = pi/2, delta = 0, and the normal mass ordering. For other values of  delta, the 68% region spans from 0.02 to 0.12, and the 90% region from 0 to 0.16.


pdgid: S067P13
text:
The quoted limit is for Deltamass**2(32) = 2.32E-3 eV**2,  theta(23) = pi/2, delta = 0, and the inverted mass ordering. For other values  of delta, the 68% region spans from 0.02 to 0.16, and the 90% region from 0 to 0.21.


pdgid: S067P13
text:
FOGLI 2011 obtained this result from an analysis using the atmospheric, accelerator long baseline, CHOOZ, solar, and KamLAND data. Recently, MUELLER 2011 suggested an average increase of about 3.5% in normalization of the reactor nubar_{{e}} fluxess, and using these fluxes, the fitted result becomes 0.10+-0.03.


pdgid: S067P13
text:
GANDO 2011 report sin**2(theta_{{13}}()) = 0.020+-0.016. This result was obtained with three-neutrino fit using the KamLAND + solar data.


pdgid: S067P13
text:
GANDO 2011 report sin**2(theta_{{13}}()) = 0.032+-0.037. This result was obtained with three-neutrino fit using the KamLAND data only.


pdgid: S067P13
text:
This result corresponds to the limit of <0.12 at 90% CL for Deltam(32)**2 = 2.43E-3 eV**2, theta(23) = pi/2, and delta = 0. For other values of delta, the 90% CL region spans from 0 to 0.16.


pdgid: S067P13
text:
This result corresponds to the limit of <0.20 at 90% CL for Deltam(32)**2 = 2.43E-3 eV**2, theta(23) = pi/2, and delta = 0. For other values of delta, the 90% CL region spans from 0 to 0.21.


pdgid: S067P13
text:
AHARMIM 2010 obtained this result by a three-neutrino oscillation analysis with the value of Deltamass**2(31) fixed to 2.3E-3 eV**2, using global solar neutrino data and KamLAND data (ABE 2008A). CPT invariance is assumed. This result implies an upper bound of sin**2(theta_{{13}}())< 0.057 (95% CL) or sin**2(2theta_{{13}}())< 0.22 (95% CL).


pdgid: S067P13
text:
The quoted limit is for Deltam(32)**2 = 2.43E-3 eV**2, theta(23) = pi/2, and delta = 0. For other values of delta, the 68% CL region spans from 0.02 to 0.26.


pdgid: S067P13
text:
The quoted limit is for Deltam(32)**2 = 2.43E-3 eV**2, theta(23) = pi/2, and delta = 0. For other values of delta, the 68% CL region spans from 0.04 to 0.34.


pdgid: S067P13
text:
FOGLI 2008 obtained this result from a global analysis of all neutrino oscillation data, that is, solar + KamLAND + atmospheric + accelerator long baseline + CHOOZ.


pdgid: S067P13
text:
FOGLI 2008 obtained this result from an analysis using the solar and KamLAND neutrino oscillation data.


pdgid: S067P13
text:
FOGLI 2008 obtained this result from an analysis using the atmospheric, accelerator long baseline,  and CHOOZ neutrino oscillation data.


pdgid: S067P13
text:
YAMAMOTO 2006 searched for nu_mu --> nu_e appearance. Assumes 2 sin**2(2theta(mu e)) = sin**2(2theta(13)). The quoted limit is for Deltam(32)**2 = 1.9E-3 eV**2. That value of Deltam(32)**2 is the one-sigma low value for AHN 2006A. For the AHN 2006A best fit value of 2.8E-3 eV**2, the sin**2(2theta(13)) limit is < 0.26. Supersedes AHN 2004.


pdgid: S067P13
text:
AHN 2004 searched for nu_mu --> nu_e appearance. Assuming  2 sin**2(2 theta(mu_{{e}})) = sin**2(2 theta(13)), a limit on sin**2(2 theta(mu_{{e}})) is converted to a limit on sin**2(2 theta(13)).The quoted limit is for Deltam(32)**2 = 1.9E-3 eV**2. That value of Deltam(32)**2 is  the one-sigma low value for ALIU 2005. For the ALIU 2005 best fit value of 2.8E-3 eV**2, the sin**2(2 theta(13)) limit is < 0.30.


pdgid: S067P13
text:
The quoted limit is for Delta(m)(32)**2 = 1.9E-3 eV**2. That value of Delta(m)(32)**2 is the 1-sigma low value for ALIU 2005. For the ALIU 2005 best fit value of 2.8E-3 eV**2, the sin**2(2 theta)(13) limit is < 0.19. In this range, the theta(13) limit is larger for lower values of Delta(m)(32)**2, and smaller for higher values of Delta(m)(32)**2.


pdgid: S067P13
text:
The quoted limit is for Delta(m)(32)**2 = 1.9E-3 eV**2. That value of Delta(m)(32)**2 is the 1-sigma low value for ALIU 2005. For the ALIU 2005 best fit value of 2.8E-3 eV**2, the sin**2(2 theta)(13) limit is < 0.23.


pdgid: S067P13
text:
The quoted limit is for Delta(m)(32)**2 = 2.43E-3 eV**2. That value of Delta(m)(32)**2 is the central value for ADAMSON 2008. For the ADAMSON 2008 1-sigma low value of 2.30E-3 eV**2, the sin**2(2 theta)(13) limit is < 0.16. See also APOLLONIO 2003 for a detailed description of the experiment.


pdgid: S067DEL
text:
ABE 2023F results are based on data collected between 2010 and 2020 in (anti)neutrino mode  and include a neutrino beam exposure of 1.97E21 (1.63E21) protons on target.  For  inverted mass ordering, the quoted result is 1.54+0.18-0.19 pi rad.  Supersedes  ABE 2020F.


pdgid: S067DEL
text:
ACERO 2022 uses data from Jun 29, 2016 to Feb 26, 2019 (12.5E20 POT) and Feb 6, 2014 to  Mar 20, 2020 (13.6E20 POT). Results for normal and inverted mass ordering, and    theta_{{23}}()   octant I and II are presented. Supersedes ACERO 2019.


pdgid: S067DEL
text:
For the octant I (lower octant), the 68% CL allowed region is discontinuous, and all delta  values are allowed at 90% CL.


pdgid: S067DEL
text:
The inverted mass ordering is rejected at 1.0 sigma.  The error bars are reported relative to the global minima in normal mass ordering.


pdgid: S067DEL
text:
SALAS 2021 reports results of a global fit to neutrino oscillation data available at the   time of the Neutrino 2020 conference.


pdgid: S067DEL
text:
ABE 2020F results are based on data collected between 2009 and 2018 in (anti)neutrino mode  and include a neutrino beam exposure of 1.49E21 (1.64E21) protons on target. For inverted  mass ordering, the quoted result is 1.56+0.15-0.17 pi rad. Supersedes ABE 2018G.


pdgid: S067DEL
text:
ESTEBAN 2020A reports results of a global fit to neutrino oscillation data available at the   time of the Neutrino 2020 conference.


pdgid: S067DEL
text:
ACERO 2019 is based on a sample size of 1.33E20 protons on target with combined   antineutrino and neutrino data. Superseded by ACERO 2022.


pdgid: S067DEL
text:
ABE 2018B uses 328 kton.years of Super-Kamiokande I-IV atmospheric neutrino data to  obtain this result. The fit is performed over the three parameters, Deltam(32)**2,  sin**2(theta_{{23}}), and delta, while the solar parameters and sin**2(theta_{{23}}) are  fixed to Deltam(21)**2= 7.53+-0.18E-5 eV**2, sin**2(theta_{{12}}) =  0.304+-0.014, and sin**2(theta_{{13}}) = 0.0219+-0.0012.   Superseded by WESTER 2024.


pdgid: S067DEL
text:
ABE 2018G confidence intervals are marginalized over both mass orderings. Normal order  preferred with a posterior probability of 87%. The 1-sigma result for normal mass ordering  used in the average was provided by the experiment via private communications. Supersedes ABE 2017F.


pdgid: S067DEL
text:
ABE 2017F confidence intervals are obtained using a frequentist analysis including  theta_{{13}} constraint from reactor experiments. Bayesian intervals based on Markov Chain Monte  Carlo method are also provided by the authors. Superseded by ABE 2018G.


pdgid: S067DEL
text:
ADAMSON 2016 result is based on a data sample with 2.74E20 protons on target. The  likelihood-based analysis observed 6 nu_{{e}} events with an expected background of 0.99+-0.11 events.


pdgid: S067DEL
text:
ADAMSON 2014 result is based on three-flavor formalism and theta_{{23}}()>pi/4.  Likelihood as a function of delta is also shown for the other three combinations of  hierarchy and theta_{{23}}() octants; all values of delta are allowed at 90% C.L.


pdgid: S067DEL
text:
GONZALEZ-GARCIA 2014 result comes from a frequentist global fit. The corresponding Bayesian global fit to the same data results are reported in BERGSTROM 2015 as 68% CL intervals  of 1.24 -- 1.94 for normal and 1.15 -- 1.77 for inverted mass ordering.


pdgid: S067DEL
text:
ADAMSON 2013A result is based on nu_{{e}} appearance in MINOS and the calculated  sin**2(2theta_{{23}}()) = 0.957,theta_{{23}}()>pi/4, and normal mass hierarchy.  Likelihood as a function ofdelta is also shown for the other three combinations of  hierarchy and theta_{{23}}() octants; all values of delta are allowed at 90% C.L.


pdgid: S067D1
text:
AGUILAR-AREVALO 2021 result is based on a total of 18.75E20 POT in neutrino mode, and  11.27E20 POT in anti-neutrino mode. Best fit at 0.043 eV**2. The allowed region does not  extend to large Deltam**2. The quoted value is the entire allowed region of  Deltam**2 at 90% C.L. for all values of sin**2(2theta). Supersedes  AGUILAR-AREVALO 2018C.


pdgid: S067D1
text:
AGUILAR-AREVALO 2018C result is based on nu_mu --> nu_e appearance of 460.5+-99.0   events; The best fit value is Deltam**2 = 0.041 eV**2. Superseded by  AGUILAR-AREVALO 2021.


pdgid: S067D1
text:
AGUILAR-AREVALO 2013A result is based on nu_mu --> nu_e appearance of 162.0+-47.8  events; marginally compatible with twoneutrino  oscillations.  The best fit value is  Deltam**2 = 3.14 eV**2.


pdgid: S067D1
text:
MAHN 2012 is a combined spectral fit of MiniBooNE and SciBooNE neutrino data with the range of Deltam**2 up to 25 eV**2. The best limit is 0.04 at 7 eV**2.


pdgid: S067D1
text:
AGUILAR 2001 is the final analysis of the LSND full data set. Search is made for the nu_mu --> nu_e oscillations using nu_{{mu}} from pi+ decay in flight by observing beam-on electron events from nu_e  ^C --> e- X. Present analysis results in 8.1+-12.2+-1.7 excess events in the 60<E(e)<200 MeV energy range, corresponding to oscillation probability of 0.10+-0.16+-0.04%.  This is consistent, though less significant, with the previous result of ATHANASSOPOULOS 1998, which it supersedes.  The present analysis uses selection criteria developed for the decay at rest region, and is less effective in removing the background above 60 MeV than ATHANASSOPOULOS 1998.


pdgid: S067D1
text:
ATHANASSOPOULOS 1998 is a search for the nu_mu --> nu_e oscillations using nu_{{mu}} from pi+ decay in flight.  The 40 observed beam-on electron events are consistent with nu_e  ^C --> e- X; the expected background is 21.9+-2.1. Authors interpret this excess as evidence for an oscillation signal corresponding to oscillations with probability (0.26+-0.10+-0.05)%.  Although the significance is only 2.3sigma, this measurement is an important and consistent cross check of ATHANASSOPOULOS 1996 who reported evidence for nubar_mu --> nubar_e oscillations from mu+ decay at rest. See also ATHANASSOPOULOS 1998B.


pdgid: S067D1
text:
LOVERRE 1996 uses the charged-current to neutral-current ratio from the combined CHARM (ALLABY 1986) and CDHS (ABRAMOWICZ 1986) data from 1986.


pdgid: S067S1
text:
AGUILAR-AREVALO 2021 result is based on a total of 18.75E20 POT in neutrino mode, and  11.27E20 POT in anti-neutrino mode. The best fit value is sin**2(2theta)=0.807. The  allowed region does not extend to large Delta. The quoted value is the entire  allowed region of sin**2(2theta) at 90% C.L. for all values of  Delta. Supersedes AGUILAR-AREVALO 2018C.


pdgid: S067S1
text:
AGUILAR-AREVALO 2018C result is based on nu_mu --> nu_e appearance of 460.5+-99.0   events;  The best fit value is sin**2(2theta) = 0.92. The quoted limit for the  two-neutrino mixing angle theta is valid above  Deltam**2 = 0.59 eV**2.  Superseded by AGUILAR-AREVALO 2021.


pdgid: S067S1
text:
AGUILAR-AREVALO 2013A result is based on nu_mu --> nu_e appearance of 162.0+-47.8  events; marginally compatible  with two neutrino  oscillations. The best fit value is  sin**2(2theta) = 0.002.


pdgid: S067S1
text:
ANTONELLO 2013 use the ICARUS T600 detector at LNGS and ~20 GeV beam of nu_{{mu}} from CERN  730 km away to search for an excess of nu_{{e}} events. Two events are found with 3.7+-0.6 expected from conventional sources. This result excludes some parts of the parameter space expected by LSND.


pdgid: S067S1
text:
Based on four events with a background of 6.4+-0.9 from conventional sources with an average energy of 20 GeV and 730 km from the source of nu_{{mu}}.


pdgid: S067S1
text:
The limit is sin**2(2theta) < 0.9E-3 at Delta = 2 eV**2. That value of Delta corresponds to the smallest mixing angle consistent with the reported signal from LSND in AGUILAR 2001.


pdgid: S067S1
text:
The limit becomes sin**2(2theta) < 0.15 at Delta = 2.8E-3 eV**2, the bets-fit value of the nu_{{mu}} disappearance analysis in K2K.


pdgid: S067S1
text:
AGUILAR 2001 is the final analysis of the LSND full data set of the search for the nu_mu --> nu_e oscillations. See footnote in preceding table for further details.


pdgid: S067S1
text:
ATHANASSOPOULOS 1998 report (0.26+-0.10+-0.05)% for the oscillation probability; the value of sin**2(2theta) for large Deltam**2 is deduced from this probability.  See footnote in preceding table for further details, and see the paper for a plot showing allowed regions.  If effect is due to oscillation, it is most likely to be intermediate sin**2(2theta) and Deltam**2. See also ATHANASSOPOULOS 1998B.


pdgid: S067S1
text:
VILAIN 1994C limit derived by combining the nu_{{mu}} and nubar_{{mu}} data assuming CP conservation.


pdgid: S067D2
text:
Based on nubar_mu --> nubar_e appearance of 78.4+-28.5 events. The best fit values are Deltam**2 = 0.043 eV**2 and sin**2(2theta) = 0.88.


pdgid: S067D2
text:
This value is for a two neutrino oscillation analysis for excess antineutrino events with E(nu)> 475 MeV. The best fit is at 0.07. The allowed region is consistent with LSND reported by AGUILAR 2001. Supercedes AGUILAR-AREVALO 2009B.


pdgid: S067D2
text:
This value is for a two neutrino oscillation analysis for excess antineutrino events with E(nu)> 200 MeV with subtraction of the expected 12 events low energy excess seen in the neutrino component of the beam. The best fit value is 0.007 for Delta(m)**2 = 4.4 eV**2.


pdgid: S067D2
text:
ARMBRUSTER 2002 is the final analysis of the KARMEN2 data for 17.7m distance from the ISIS stopped pion and muon neutrino source.  It is a search for nubar_{{e}}, detected by the inverse beta-decay reaction on protons and C12. 15 candidate events are observed, and 15.8+-0.5 background events are expected, hence no oscillation signal is detected.  The results exclude large regions of the parameter area favored by the LSND experiment.


pdgid: S067D2
text:
AGUILAR 2001 is the final analysis of the LSND full data set. It is a search for nubar_{{e}} 30m from LAMPF beam stop.  Neutrinos originate mainly for pi+ decay at rest.  nubar_{{e}} are detected through nubar_e p --> e+ n (20<E(e+)<60 MeV) in delayed coincidence with n p --> d gamma.  Authors observe 87.9+-22.4+-6.0 total excess events.  The observation is attributed to nubar_mu --> nubar_e oscillations with the oscillation probability of 0.264+-0.067+-0.045%, consistent with the previously published result.  Taking into account all constraints, the most favored allowed region of oscillation parameters is a band of Delta(m)**2 from 0.2 -- 2.0eV**2. Supersedes ATHANASSOPOULOS 1995, ATHANASSOPOULOS 1996, and ATHANASSOPOULOS 1998.


pdgid: S067D2
text:
ATHANASSOPOULOS 1996 is a search for nubar_{{e}} 30m from LAMPF beam stop. Neutrinos originate mainly from pi+ decay at rest. nubar_{{e}} could come from either nubar_mu --> nubar_e or nu_e --> nubar_e; our entry assumes the first interpretation.  They are detected through nubar_e p --> e+ n (20MeV <E(e+)<60 MeV) in delayed coincidence with n p --> d gamma.  Authors observe 51+-20+-8 total excess events over an estimated background 12.5+-2.9. ATHANASSOPOULOS 1996B is a shorter version of this paper.


pdgid: S067D2
text:
ATHANASSOPOULOS 1995 error corresponds to the 1.6sigma band in the plot. The expected background is 2.7+-0.4 events.  Corresponds to an oscillation probability of (0.34+0.20-0.18+-0.07)%. For a different interpretation, see HILL 1995. Replaced by ATHANASSOPOULOS 1996.


pdgid: S067D2
text:
HILL 1995 is a report by one member of the LSND Collaboration, reporting a different conclusion from the analysis of the data of this experiment (see ATHANASSOPOULOS 1995).  Contrary to the rest of the LSND Collaboration, Hill finds no evidence for the neutrino oscillation nubar_mu --> nubar_e and obtains only upper limits.


pdgid: S067D2
text:
FREEDMAN 1993 is a search at LAMPF for nubar_{{e}} generated from any of the three neutrino types nu_{{mu}}, nubar_{{mu}}, and nu_{{e}} which come from the beam stop.  The nubar_{{e}}'s would be detected by the reaction nubar_e p --> e+ n. FREEDMAN 1993 replaces DURKIN 1988.


pdgid: S067S2
text:
ANTONELLO 2013A obtained the limit by assuming nubar_mu --> nubar_e oscillation  from the ~2%  of nubar_{{mu}} evnets contamination in  the CNGS beam.


pdgid: S067S2
text:
This value is for a two neutrino oscillation analysis for excess antineutrino events with E(nu)> 475 MeV.  At 90% CL there is no solution at high Delta(m)**2.  The best fit is at maximal mixing. The allowed region is consistent with LSND reported by AGUILAR 2001. Supercedes AGUILAR-AREVALO 2009B.


pdgid: S067S2
text:
This value is for a two neutrino oscillation analysis for excess antineutrino events with E(nu)> 200 MeV with subtraction of the expected 12 events low energy excess seen in the neutrino component of the beam. At 90% CL there is no solution at high Delta(m)**2. The best fit value is 0.007 for Delta(m)**2 = 4.4 eV**2.


pdgid: S067S2
text:
ARMBRUSTER 2002 is the final analysis of the KARMEN2 data. See footnote in the preceding table for further details, and the paper for the exclusion plot.


pdgid: S067S2
text:
AGUILAR 2001 is the final analysis of the LSND full data set. The deduced oscillation probability is 0.264+-0.067+-0.045%; the value of sin**2(2theta) for large Delta(m)**2 is twice this probability (although these values are excluded by other constraints). See footnote in preceding table for further details, and the paper for a plot showing allowed regions. Supersedes ATHANASSOPOULOS 1995, ATHANASSOPOULOS 1996, and ATHANASSOPOULOS 1998.


pdgid: S067S2
text:
ATHANASSOPOULOS 1996 reports (0.31+-0.12+-0.05)% for the oscillation probability; the value of sin**2(2theta) for large Delta(m)**2 should be twice this probability. See footnote in preceding table for further details, and see the paper for a plot showing allowed regions.


pdgid: S067DU4
text:
OYAMA 1989 gives a range of limits, depending on assumptions in their analysis.  They argue that the region Delta(m)**2 = (100-1000)*10**-5 eV**2 is not ruled out by any data for large mixing.


pdgid: S067NUS
text:
AN 2024 use the full data set of the Daya Bay reactor experiment, corresponding to 3158 days  of detector operation, to place a limit on  nubar_e --> nubar_s oscillations. The result is in  terms of sin**2(2theta(14)) for 0.01 eV**2 < Deltam(41)**2  < 0.1 eV**2. A 3+1 mixing model is assumed.


pdgid: S067NUS
text:
AUGIER 2024 use of 1.47 kg.yr of Mo100 exposure of the CUPID-Mo  scintillating cryogenic calorimeter, operated at the Laboratoire Souterrain de Modane, to place a  range of limits on the admixture of sterile neutrinos. Two different 2nubeta beta spectral  analysis approaches are used. sin**2(theta(14)) is given for sterile neutrino masses  ranging from 0.5 to 1.5 MeV. The limit above is for 0.5 MeV mass.


pdgid: S067NUS
text:
AKER 2023 assume a 3+1 neutrino mixing model, use low-rate commissioning data of the KATRIN  tritium beta decay experiment to place a limit on sin**2(theta(14)) for a  admixture sterile neutrino mass m(4) of ~ 300 eV.


pdgid: S067NUS
text:
ALMAZAN 2023 use inverse beta decay data collected by the STEREO experiment, placed 9 to 11 m   from the ILL research reactor, to search for nubar_e --> nubar_s oscillations. The ILL  research  reactor uses highly enriched U235 fuel. No indication of the oscillation to  sterile  neutrinos is found, the stated limit on sin**2(2theta(14)) correspond to   Deltam(41)**2 ~ 1 eV**2 where the exclusion is maximal. Supersedes   ALMAZAN 2018.


pdgid: S067NUS
text:
AKER 2022A uses the first two science runs of the KATRIN tritium beta decay neutrino  mass experiment to search for  an admixture of sterile neutrinos. No evidence is found for a  spectral anomaly, indicating such  admixture. The resulting limit is on  sin**2(2theta(14)) for sterile neutrino masses  m(4) < 40 eV. It is most  restrictive at Deltam(41)**2 ~ 400  eV**2. A 3+1 model is assumed.


pdgid: S067NUS
text:
ATIF 2022 report results from the combined analysis of the RENO (419 m) and NEOS (24 m)  experiments data, collected at the Hanbit Nuclear Power Plant. Results, in terms of  sin**2(2theta(14)), constrain for nubar_e --> nubar_s oscillations. The authors  report both excluded and allowed parameter combinations. The exclusion result reported here is  based on the Feldman-Cousins method and for Deltam(41)**2 ~ 0.55  eV**2. Part of the allowed area is excluded by the STEREO and PROSPECT experiments.


pdgid: S067NUS
text:
BARINOV 2022A report an event deficit observed using the segmented Baksan Ga neutrino    detector, exposed to a 3.4 MCi Cr51 source. Equal suppression factors are observed for   the inner and outer segments. The deficit is interpreted as evidence for oscillations to sterile   neutrinos. The result is in terms of sin**2(2theta(14)), for a best fit of   Deltam(41)**2 =3.3 (-2.3)**+inf eV**2. Some, but not all, of the  allowed neutrino parameter space conflicts with other experiments.


pdgid: S067NUS
text:
ANDRIAMIRADO 2021 reports a search for nubar_e --> nubar_s oscillations at the HFIR  research reactor, at baselines from 6.7 to 9.2 m. The reactor has a U235 core. 4 tons of  Li6-doped liquid scintillator are used in a segmented detector. Oscillations into  sterile neutrinos are disfavored. The stated limit for sin**2(2theta(14)) is for  Deltam(41)**2 ~ 2 eV**2 where the sensitivity is maximal.


pdgid: S067NUS
text:
SEREBROV 2021 searches for nubar_e --> nubar_s oscillations with a moveable detector with  baseline 6 -- 12 m from the SM-3 research reactor with highly enriched U235 fuel.   Analyzing the  L/E dependence a chi^2 minimum is found at  Deltam(41)**2  = 7.3+-0.13+-1.16 eV**2  and  sin**2(2theta(14)) = 0.36+-0.12.  The quoted limit of 0.005 for  sin**2(2theta(14)) corresponds  to  Deltam(41)**2 ~ 2 eV**2.  This is the result from 720 days of reactor ON and 860 days of reactor OFF measurements. The  significance of the chi^2 minimum is 2.9 sigma. Supersedes SEREBROV 2020,  SEREBROV 2019 and SEREBROV 2018A.


pdgid: S067NUS
text:
SKROBOVA 2020 searches for nubar_{{e}}-nubar_{{s}} oscillations using the DANSS  detector at 10.7, 11.2, and 12.7 m from the 3.1 GW(th) power reactor. The DANSS detector is  highly segmented and moveable; the positions are changed usually 3 times a week. The analysis is  based on the ratio of the events at top and bottom position; the middle position is used for checks  of consistency. No evidence for sterile neutrinos is found. The quoted limit 0.008, the smallest  excluded sin**2(2theta(14)), corresponds to Deltam(41)**2 ~ 1.0  eV**2. Supersedes ALEKSEEV 2018.


pdgid: S067NUS
text:
ALEKSEEV 2018 searches for nubar_e --> nubar_s oscillations using the DANSS detector at     10.7, 11.2, and 12.7 m from the 3.1 GW(th) power reactor. The DANSS detector is highly     segmented and moveable; the positions are changed usually 3 times a week. The analysis is based on     the ratio of the events at top and bottom position; the middle position is used for checks of     consistency. The best fit point is at Deltam(41)**2 = 1.4 eV**2 and     sin**2(2theta(14)) = 0.05 with Deltachi**2 = 13.1 (statistical     errors only) compared to the fit with 3 active neutrinos only. The quoted limit of 0.01 for     sin**2(2theta(14)) corresponds to Deltam(41)**2 ~ 1.0 eV**2.    Superseded by SKROBOVA 2020.


pdgid: S067NUS
text:
ALMAZAN 2018 searches for the nubar_e --> nubar_s oscillations with baseline from 9.4 to   11.1 m from the ILL research reactor with highly enriched U235 fuel. The STEREO  detector  consists of six separated cells with Gd loaded scintillator, with 15 m water  equivalent  overburden. The detected rate is 396.3+-4.7 nubar_{{e}}/day with signal to  background ratio of  about 0.9. The reported results corresponds to 66 days of reactor-on. The  analysis uses the  relative rates normalized to the cell number 1. No indication of the oscillation  to the sterile  neutrinos is found, the stated limit on sin**2(2theta(14)) correspond  to  Deltam**2(41) ~ 3.5 eV**2 where the exclusion is maximal. Superseded  by ALMAZAN 2023.


pdgid: S067NUS
text:
ASHENFELTER 2018 searches for the nubar_e --> nubar_s oscillations at baseline from 6.7  to 9.2 m from the 85 MW research reactor with pure U235 core. The segmented 4 ton  Li6-doped liquid scintillator is operated with about 1 m water equivalent overburden and  recorded 25461+-283 IBD events. No indication of oscillations into sterile neutrinos was  observed. The stated limit for sin**2(2theta(14)) is for Deltam(41)**2  ~ 2 eV**2 where the sensitivity is maximal.


pdgid: S067NUS
text:
AARTSEN 2017B uses three years of upward-going atmospheric neutrino data in the energy range  of 10-60 GeV to constrain their disappearance into light sterile neutrinos. The reported limit  sin**2(theta)(24) < 0.11 at 90% C.L. is for Deltam**2(41) =  1.0 eV**2. We convert the result to sin**2(2theta)(24) for the listing. AARTSEN 2017B  also reports cos**2(theta)(24).sin**2(theta)(34) < 0.15 at  90% C.L. for Deltam**2(41) = 1.0 eV**2.


pdgid: S067NUS
text:
ABDURASHITOV 2017 use the Troitsk nu-mass experiment to search for sterile neutrinos with  mass 0.1 - 2 keV.  We convert the reported limit from U(e4)**2<0.002 to  sin**2(2theta)(14)<0.008 assume U(e4)~  sin(theta)(14). The stated limit corresponds to the smallest U(e4)**2.  The exclusion curve begins at U(e4)**2 of 0.02 for m(4) = 0.1 keV.


pdgid: S067NUS
text:
KO 2017 reports on short baseline reactor oscillation search (nubar_e --> nubar_s),  motivated be the so-called "reactor antineutrino anomaly". The experiment is conducted at 23.7 m  from the core of unit 5 of the Hanbit Nuclear Power Complex in Korea. the reported limited on  sin**2(2theta(41)) for sterile neutrinos was determined using the reactor antineutrino  spectrum determined by the Daya Bay experiment for Deltam(14)**2 around 0.55  eV**2 where the sensitivity is maximal. A fraction of the parameter space derived from the  "reactor antineutrino anomaly" is excluded by this work. Compared to reactor models an event excess  is observed at about 5 MeV, in agreement with other experiments.


pdgid: S067NUS
text:
AARTSEN 2016 use one year of upward-going atmospheric muon neutrino data in the energy range  of 320 GeV to 20 TeV to constrain their disappearance into light sterile neutrinos. Sterile  neutrinos are expected to produce distinctive zenith distribution for these energies for 0.01  <=Deltam**2<=10 eV**2. The stated limit is for  sin**2(2theta)(24) at Deltam**2 around 0.3 eV**2.


pdgid: S067NUS
text:
ADAMSON 2016B combine the results of AN 2016B, ADAMSON 2016C, and Bugey-3 reactor  experiments to constrain nu_{{mu}} to nu_{{e}} mixing through oscillations into light sterile  neutrinos. The stated limit for sin**2(2theta)(mu e) is at  |Deltam(41)**2| = 1.2 eV**2.


pdgid: S067NUS
text:
ADAMSON 2016C use the NuMI beam and exposure of 10.56E20 protons on target to search for  the oscillation of nu_{{mu}} dominated beam into light sterile neutrinos with detectors at 1.04 and  735 km. The reported limit sin**2(theta(24)) < 0.022 at 95% C.L. is for  |Deltam(41)**2| = 0.5 eV**2. We convert the result to  sin**2(2theta(24)) for the listing.


pdgid: S067NUS
text:
AN 2016B utilize 621 days of data to place limits on the nubar_{{e}} disappearance into a  light sterile neutrino. The stated limit corresponds to the smallest  sin**2(2theta(14)) at |Deltam**2(41)| ~ 3E-2 eV**2  (obtained from Figure 3 in AN 2016B). The exclusion curve begins at  |Deltam**2(41)|~1.5E-4 eV**2 and extends to ~0.25  eV**2. The analysis assumes sin**2(2theta(12)) = 0.846+-0.021,  Deltam**2(21) = 7.53+-0.18E-5 eV**2, and  |Deltam**2(32)| = 2.44+-0.06E-3 eV**2.


pdgid: S067NUS
text:
AMBROSIO 2001 tested the pure 2-flavor nu_mu --> nu_s hypothesis using matter effects which change the shape of the zenith-angle distribution of upward through-going muons.  With maximum mixing and Deltam**2around  0.0024eV**2, the nu_mu --> nu_s oscillation isdisfavored with 99%  confidence level with respect to the nu_mu --> nu_tau hypothesis.


pdgid: S067NUS
text:
FUKUDA 2000 tested the pure 2-flavor nu_mu --> nu_s hypothesis using three complementary atmospheric-neutrino data samples.  With this hypothesis, zenith-angle distributions are expected to show characteristic behavior due to neutral currents and matter effects.  In the Deltam**2  and sin**2(2theta)region preferred by the Super-Kamiokande data, the nu_mu --> nu_s  hypothesis isrejected at the 99% confidence level, while the nu_mu --> nu_tauhypothesis  consistently fits all of the data sample.


pdgid: S067CPT
text:
DEGOUVEA 2005 obtained this bound at the 3sigma CL from the KamLAND (ARAKI 2005) and solar neutrino data.


pdgid: S067CP2
text:
The quoted result is the single-parameter 90% C.L. interval determined from the 90% C.L. contour in the (Deltam**2, Deltambar**2) plane, which is  obtained by minimizing the four parameter log-likelihood function with respect to the other oscillation parameters.


pdgid: S077A00
text:
AAD 2024AW search for scattering of same-sign  boson pairs into same-sign electron pairs,  mediated by a virtual Majorana HNL, in the HNL mass range 50 GeV to 20 TeV. Limits are also set for  |V(e x) V(mu x)***|.


pdgid: S077A00
text:
AAD 2024BU search for same-sign electron pairs in semileptonic decays of top quarks via a  Majorana HNL, in the HNL mass range 15 -- 75 GeV.


pdgid: S077A00
text:
HAYRAPETYAN 2024AB search for W --> e nu_x --> e e lepton nu_lepton  prompt decays  assuming coupling to a single SM generation, between 10 -- 1500 GeV. Above mass(nu_{{x}}) >  mass(W), sensitivity is greatly reduced by the required virtuality of the HNL. Results are quoted  for a mass range below mass(W) and just above mass(W), for Majorana HNLs. Similar (weaker) limits  also for Dirac HNLs are presented.


pdgid: S077A00
text:
HAYRAPETYAN 2024S search for W --> e nu_x followed by nu_{{x}} displaced decay in flight  to electromagnetic and hadronic showers in the CMS muon chamber, in the mass range mass(nu_{{x}})  ~ 1 -- 3 GeV. Limits are set for both Majorana and Dirac HNLs. This long-lived  particle style search results in an exclusion region in the coupling-mass plane whose upper contour  is determined by an insufficiently long HNL lifetime to reach the muon chambers, and lower contour  by insufficient HNL production. The intersection of these, and thus the extent of the experimental  sensitivity, occurs at mass(nu_{{x}}) ~ 3 GeV.


pdgid: S077A00
text:
HAYRAPETYAN 2024V searches for W --> e nu_x with displaced decay nu_x --> e j, i.e.  with one jet, over the range mass(nu_{{x}}) ~ 2 -- 20 GeV. Limits are set for both Dirac  and Majorana HNLs.


pdgid: S077A00
text:
AAD 2023AO search for W --> nu_x e, for both Majorana and Dirac HNL scenarios. Also  consider scenarios involving multiflavor mixing, with correspondingly weaker limits.


pdgid: S077A00
text:
Reanalysis of BEBC results (cf. COOPER-SARKAR 1985) to update searches for D_s()+- --> nu_x e+-   using a corrected formula for the HNL decay probabilities, additional production channels, and an   improved fit for the charm meson distributions. Assumes a Majorana HNL.


pdgid: S077A00
text:
TUMASYAN 2022AD search for W --> e nu_x, nu_x --> e mu nu_mu and set limits for Dirac  and Majorana Heavy Neutral Leptons. The data correspond to an integrated luminosity of 138  fb**-1.


pdgid: S077A00
text:
K+ --> e+ nu_x, with nu_{{x}} decay through U(e x). ABE 2019B also considers  bounds on |U(lepton x) U(lepton^' x)| for combinations of lepton  flavors in the nu_{{x}} decay final state.


pdgid: S077A00
text:
Searches for a Majorana Heavy Neutral Lepton producing a pi- e+ resonance in the same sign  dilepton decay D --> K pi- e+ e+.


pdgid: S077A00
text:
BRYMAN 2019 sets best limits |U(ex)|**2 < 1E-4 -- 2E-7 in the mass range  mass(nu_{{x}})~2 -- 55 MeV, respectively, using the precision branching ratio measurement  in AGUILAR-AREVALO 2015. See also BRYMAN 2019A.


pdgid: S077A00
text:
PARK 2016 quotes an approximate limit B(B+ --> e+ nu_x) < 3E-6 in the mass  range mass(nu_{{x}}) ~ 0.2 -- 1.4 GeV.


pdgid: S077A00
text:
Searches for K or pi --> e+ nu_x, nu_x --> e+ e- nu_e using a beam dump experiment at  the 70 GeV Serpukhov proton synchrotron. BARANOV 1993 also considers limits for  |U(e x) U(mu x)| from K or pi --> mu+ nu_x, nu_x --> e+ e- nu_e.


pdgid: S077A01
text:
AAD 2024BU search for same-sign muon pairs in semileptonic decays of top quarks via a  Majorana HNL, in the HNL mass range 15 -- 75 GeV.


pdgid: S077A01
text:
ABRATENKO 2024 search for K+ --> mu+ nu_x, with nu_x --> nu_mu e+ e- and nu_x --> nu_mu pi0 --> nu_mu gamma gamma in the  mass ranges mass(nu_{{x}}) ~ 10 -- 150 MeV and mass(nu_{{x}}) ~ 150 -- 245 MeV,  respectively, for the case of a Majorana HNL. The pi0 mode dominates above mass(nu_{{x}}) ~  150 MeV.


pdgid: S077A01
text:
HAYRAPETYAN 2024AB search for W --> mu nu_x --> mu mu lepton nu_lepton prompt decays  assuming coupling to a single SM generation, between 10 -- 1500 GeV. Above mass(nu_{{x}}) >  mass(W), sensitivity is greatly reduced by the required virtuality of the HNL. Results are quoted  for a mass range below mass(W) and just above mass(W), for Majorana HNLs. Similar (weaker) limits  also for Dirac HNLs are presented.


pdgid: S077A01
text:
HAYRAPETYAN 2024AC search for B --> X mu nu_x and B --> mu nu_x followed by displaced  nu_x --> mu pi+- decay, where X is an unreconstructed hadronic system, for Majorana HNLs.  Also considers mixed flavor scenarios with e mu final state lepton pairs, and presents similar  (weaker) limits for Dirac HNLs.


pdgid: S077A01
text:
HAYRAPETYAN 2024S search for W --> mu nu_x followed by nu_{{x}} displaced decay in flight  to electromagnetic and hadronic showers in the CMS muon chamber, in the mass range mass(nu_{{x}})  ~ 1 -- 3 GeV. Limits are set for both Majorana and Dirac HNLs. This long-lived  particle style search results in an exclusion region in the coupling-mass plane whose upper contour  is determined by an insufficiently long HNL lifetime to reach the muon chambers, and lower contour  by insufficient HNL production. The intersection of these, and thus the extent of the experimental  sensitivity, occurs at mass(nu_{{x}}) ~ 3.5 GeV.


pdgid: S077A01
text:
HAYRAPETYAN 2024V searches for W --> mu nu_x with displaced decay nu_x --> mu j, i.e.  with one jet, over the range mass(nu_{{x}}) ~ 2 -- 20 GeV. Limits are set for both Dirac  and Majorana HNLs.


pdgid: S077A01
text:
AAD 2023AO search for W --> nu_x mu, for both Majorana and Dirac HNL scenarios. Also  consider scenarios involving multiflavor mixing, with correspondingly weaker limits.


pdgid: S077A01
text:
AAD 2023CE search for Majorana HNLs via vector boson fusion W+- W+- --> mu+- mu+-.  Limits set in a mass(nu_{{x}}) mass range from 50 GeV up to 20 TeV, using the Phenomenological Type-I  Seesaw model as a benchmark scenario.


pdgid: S077A01
text:
TUMASYAN 2023AC search for Majorana HNLs via vector boson fusion W+- W+- --> mu+- mu+-.  Limits set in a mass(nu_{{x}}) mass range from 50 GeV up to 25 TeV.


pdgid: S077A01
text:
ABRATENKO 2022A search for K+ --> mu+ nu_x, with nu_x --> mu-+ pi+-, in the mass  range mass(nu_{{x}}) ~ 246 -- 385 MeV. Also considers limits from nu_x --> mu- pi+  only, for the case of a Dirac HNL.


pdgid: S077A01
text:
TUMASYAN 2022AD search for W --> mu nu_x, nu_x --> mu e nu_e and set limits for Dirac  and Majorana Heavy Neutral Leptons. The data correspond to an integrated luminosity of 138  fb**-1.


pdgid: S077A01
text:
K+ --> mu+ nu_x, with nu_{{x}} decay through U(mu x). ABE 2019B also  considers bounds on |U(lepton x) U(lepton^' x)| for combinations of  lepton flavors in the nu_{{x}} decay final state.


pdgid: S077A01
text:
PARK 2016 quotes an approximate limit B(B+ --> mu+ nu_x) < 3E-6 in the mass  range mass(nu_{{x}}) ~ 0.2 -- 1.4 GeV.


pdgid: S077A01
text:
Search for Heavy Neutral Leptons produced by neutral current muon neutrino interactions, with  nu_x --> mu+ mu- nu_mu.


pdgid: S077A01
text:
K+ --> mu+ nu_x, with nu_x --> mu- pi+, in the mass range mass(nu_{{x}}) ~ 260 -- 385 MeV.    ABRATENKO 2020 also considers nu_x --> mu+ pi- for the case of a Majorana HNL.


pdgid: S077A02
text:
AAD 2024BU search for same-sign tau pairs in semileptonic decays of top quarks via a Majorana  HNL, in the HNL mass range 15 -- 75 GeV.


pdgid: S077A02
text:
HAYRAPETYAN 2024AB search for W --> tau nu_x --> tau tau lepton nu_lepton prompt decays  assuming coupling to a single SM generation, between 10 -- 1500 GeV. Above mass(nu_{{x}}) >  mass(W), sensitivity is greatly reduced by the required virtuality of the HNL. Results are quoted  for a mass range below mass(W) and just above mass(W), for Majorana HNLs. Similar (weaker) limits  also for Dirac HNLs are presented.


pdgid: S077A02
text:
HAYRAPETYAN 2024S search for W --> tau nu_x followed by nu_{{x}} displaced decay in  flight to electromagnetic and hadronic showers in the CMS muon chamber, in the mass range  mass(nu_{{x}}) ~ 1 -- 2 GeV. Limits are set for both Majorana and Dirac HNLs. This  long-lived particle style search results in an exclusion region in the coupling-mass plane whose  upper contour is determined by an insufficiently long HNL lifetime to reach the muon chambers, and  lower contour by insufficient HNL production. The intersection of these, and thus the extent of the  experimental sensitivity, occurs at mass(nu_{{x}}) ~ 2 GeV.


pdgid: S077A02
text:
HAYRAPETYAN 2024V searches for W --> tau nu_x with displaced decay nu_x --> tau j,  i.e. with one jet, over the range mass(nu_{{x}}) ~ 3 -- 20 GeV. Limits are set for both  Dirac and Majorana HNLs.


pdgid: S077A02
text:
NAYAK 2024 searches for tau --> pi nu_x with displaced decay nu_x --> nu_tau mu+ mu-  in the Belle central drift chamber (CDC). This long-lived particle style search results in an  exclusion region in the coupling-mass plane whose upper contour is determined by an insufficiently  long HNL lifetime to reach the CDC, and lower contour by insufficient HNL production.  Limits are  set for both Dirac and Majorana HNLs.


pdgid: S077A02
text:
Reanalysis of BEBC results (cf. COOPER-SARKAR 1985) to include searches for D_s()+- --> nu_tau tau+-,  tau+- --> nu_x pi+-, nu_x rho+-, or nu_x nu_tau lepton+- via   U(tau x).  Assumes a Majorana HNL.


pdgid: S077A02
text:
Reanalysis of CHARM results (cf. ORLOFF 2002) to include searches for nu_x --> nu lepton+ lepton-   decays, and including the production of HNLs from tau decays.


pdgid: S077A02
text:
Search for displaced nu_{{x}} decay signatures. Kinematical suppression of nu_x --> tau X at  lower masses leads to rapid loosening of the |U(tau x)| bound compared to that for  |U(e x)| and |U(mu x)|.


pdgid: S077A02
text:
Search for tau --> pi nu_x , nu_x --> pi e or pi mu in the range 0.2 -- 1.6 GeV.  LIVENTSEV 2023 reports results for the sum  Sigma(lepton=e,mu,tau)|U(lepton x)|**2 in a  model-dependent context, but which may be roughly reinterpreted as a limit |U(e x) U(tau x)|**2 +  |U(mu x) U(tau x)|**2 ~< 5E-9 in either Majorana or Dirac HNL  scenarios.


pdgid: S077A02
text:
TUMASYAN 2022H sets limits on an approximately mass-degenerate vector-like lepton SU(2)   doublet coupling to the tau. Some of the reported signal region distributions might be used to   set limits for heavy neutral leptons coupled to the tau. The data correspond to an integrated  luminosity of 138 fb**-1.


pdgid: Q123UM
text:
DOMINGUEZ 2019 determine the quark mass from a QCD finite energy sum rule for the divergence  of the axial current.


pdgid: Q123UM
text:
BAZAVOV 2018 determine the quark masses using a lattice computation with staggered fermions  and four active quark flavors.


pdgid: Q123UM
text:
FODOR 2016 is a lattice simulation with n_{{f}} = 2 + 1 dynamical flavors and includes  partially quenched QED effects.


pdgid: Q123UM
text:
CARRASCO 2014 is a lattice QCD computation of light quark masses using 2 + 1 + 1 dynamical quarks, with m_{{u}} = m_{{d}} not= m_{{s}} not= m_{{c}}. The u and d quark masses are obtained separately by using the K meson mass splittings and lattice results for the electromagnetic contributions.


pdgid: Q123UM
text:
BLUM 2010 determines light quark masses using a QCD plus QED lattice computation of the electromagnetic  mass splittings of the low-lying hadrons. The lattice simulations use 2+1 dynamical quark flavors.


pdgid: Q123UM
text:
DAVIES 2010 and MCNEILE 2010 determine mbar_{{c}}(mu)/mbar_{{s}}(mu) = 11.85+-0.16 using a lattice computation with n_{{f}} = 2 + 1 dynamical fermions of the pseudoscalar meson masses. Mass mass(u) is obtained from this using the value of mass(c) from ALLISON 2008 or MCNEILE 2010 and the BAZAVOV 2010 values for the light quark mass ratios, mass(s)/mbar and mass(u)/mass(d).


pdgid: Q123UM
text:
DURR 2011 determine quark mass from a lattice computation of the meson spectrum using n_{{f}} = 2 + 1 dynamical flavors. The lattice simulations were done at the physical quark mass, so that extrapolation in the quark mass was not needed. The individual mass(u), mass(d) values are obtained using the lattice determination of the average mass mass(ud) and of the ratio mass(s)/mass(ud) and the value of Q = (mass**2(s) - mass**2(ud)) / (mass**2(d) - mass**2(u)) as determined from eta --> 3pi decays.


pdgid: Q123UM
text:
DOMINGUEZ 2009 use QCD finite energy sum rules for the two-point function of the divergence of the axial vector current computed to order alpha(s)**4.


pdgid: Q123UM
text:
DEANDREA 2008 determine mass(u)-mass(d) from eta --> 3pi0, and combine with the PDG 2006 lattice  average value of mass(u)+mass(d) = 7.6+-1.6 to determine mass(u) and mass(d).


pdgid: Q123UM
text:
BLUM 2007 determine quark masses from the pseudoscalar meson masses using a QED plus QCD lattice computation with two dynamical quark flavors.


pdgid: Q123UM
text:
JAMIN 2006 determine mass(u)(2 GeV) by combining the value of mass(s) obtained from the spectral function for the scalar K pi form factor with other determinations  of the quark mass ratios.


pdgid: Q123UM
text:
MASON 2006 extract light quark masses from a lattice simulation using staggered fermions with an improved action,  and three dynamical light quark flavors with degenerate u and d quarks. Perturbative corrections were included at NNLO order. The quark masses mass(u) and mass(d) were determined from their  (mass(u)+mass(d))/2 measurement and AUBIN 2004A mass(u)/mass(d) value.


pdgid: Q123UM
text:
NARISON 2006 uses sum rules for e+ e- --> hadrons to order alpha_{{s}}^3() to determine mass(s) combined with other determinations of the quark mass ratios.


pdgid: Q123DM
text:
DAVIES 2010 and MCNEILE 2010 determine mbar_{{c}}(mu)/mbar_{{s}}(mu) = 11.85+-0.16 using a lattice computation with n_{{f}} = 2 + 1 dynamical fermions of the pseudoscalar meson masses. Mass mass(d) is obtained from this using the value of mass(c) from ALLISON 2008 or MCNEILE 2010 and the BAZAVOV 2010 values for the light quark mass ratios, mass(s)/mbar and mass(u)/mass(d).


pdgid: Q123DM
text:
JAMIN 2006 determine mass(d)(2 GeV) by combining the value of mass(s)  obtained from the spectral function for the scalar K pi form factor with other determinations of the quark mass ratios.


pdgid: Q123DM
text:
AUBIN 2004A perform three flavor dynamical lattice calculation of pseudoscalar meson masses, with continuum estimate of electromagnetic effects in the kaon masses, and one-loop perturbative renormalization constant.


pdgid: Q123MR4
text:
ALEXANDROU 2021 determines the quark mass using a lattice calculation of the meson and baryon    masses with a twisted mass fermion action. The simulations are carried out using 2+1+1 dynamical    quarks with mass(u) = mass(d)not=mass(s)not=mass(c), including gauge ensembles   close  to the physical pion point.


pdgid: Q123MR4
text:
BRUNO 2020 determines the light quark mass using a lattice calculation with n_{{f}} = 2+1   flavors of Wilson fermions. The scale has been set from f_{{pi}} and f_{{K}}. The tuning was done   using the masses of the lightest (pi) and strange (K) pseudoscalar mesons.


pdgid: Q123MR4
text:
YUAN 2017 determine mbar using QCD sum rules in the isospin I=0 scalar channel. At the end of the "Numerical Results" section of YUAN 2017 the authors discuss the  significance of their larger value of the light quark mass compared to previous determinations.


pdgid: Q123MR4
text:
ARTHUR 2013 is a lattice computation using 2+1 dynamical domain wall fermions. Masses at mu = 3 GeV have been converted to  mu = 2 GeV using conversion factors given in their paper.


pdgid: Q123MR4
text:
DURR 2011 determine quark mass from a lattice computation of the meson spectrum using n_{{f}} = 2 + 1 dynamical flavors. The lattice simulations were done at the physical quark mass, so that extrapolation in the quark mass was not needed.


pdgid: Q123MR4
text:
BLOSSIER 2010 determines quark masses from a computation of the hadron spectrum using n_{{f}}=2 dynamical twisted-mass Wilson fermions.


pdgid: Q123MR4
text:
DAVIES 2010 and MCNEILE 2010 determine mbar_{{c}}(mu)/mbar_{{s}}(mu) = 11.85+-0.16 using a lattice computation with n_{{f}} = 2 + 1 dynamical fermions of the pseudoscalar meson masses. Mass mbar is obtained from this using the value of mass(c) from ALLISON 2008 or MCNEILE 2010 and the BAZAVOV 2010 values for the light quark mass ratio, mass(s)/mbar.


pdgid: Q123MR4
text:
AOKI 2011A determine quark masses from a lattice computation of the hadron spectrum using n_{{f}} = 2 + 1 dynamical flavors of domain wall fermions.


pdgid: Q123MR4
text:
ALLTON 2008 use a lattice computation of the pi, K, and Omega masses with 2+1 dynamical flavors of domain wall quarks, and non-perturbative renormalization.


pdgid: Q123MR4
text:
BLOSSIER 2008 use a lattice computation of pseudoscalar meson masses and decay constants with 2 dynamical flavors and non-perturbative renormalization.


pdgid: Q123MR4
text:
ISHIKAWA 2008 use a lattice computation of the light meson spectrum with 2+1 dynamical flavors of O(a) improved Wilson quarks, and one-loop perturbative renormalization.


pdgid: Q123MR4
text:
NAKAMURA 2008 do a lattice computation using quenched domain wall fermions and non-perturbative renormalization.


pdgid: Q123MR4
text:
GOCKELER 2006 use an unquenched lattice computation of the axial Ward Identity with n_{{f}} = 2 dynamical light quark flavors, and non-perturbative renormalization, to obtain  mbar(2 GeV) = 4.08+-0.25+-0.19+-0.23 MeV, where the first error is statistical, the second and third are systematic due to the fit range and force scale uncertainties, respectively. We have combined the systematic errors linearly.


pdgid: Q123MR4
text:
GOCKELER 2006A use an unquenched lattice computation of the pseudoscalar meson masses with n_{{f}} = 2 dynamical light quark flavors, and non-perturbative renormalization.


pdgid: Q123MR4
text:
MASON 2006 extract light quark masses from a lattice simulation using staggered fermions with an improved action,  and three dynamical light quark flavors with degenerate u and d quarks. Perturbative corrections were included at NNLO order.


pdgid: Q123MR4
text:
AUBIN 2004 perform three flavor dynamical lattice calculation of pseudoscalar meson masses, with one-loop perturbative renormalization constant.


pdgid: Q123MR4
text:
AOKI 2003 uses quenched lattice simulation of the meson and baryon masses with degenerate light quarks. The extrapolations are done using quenched chiral perturbation theory.


pdgid: Q123MR4
text:
The errors given in AOKI 2003B were +0.046. We changed them to +-0.3 for calculating the overall best values. AOKI 2003B uses lattice simulation of the meson and baryon masses with two dynamical light quarks. Simulations are performed using the O(a) improved Wilson action.


pdgid: Q123MR4
text:
BECIREVIC 2003 perform quenched lattice computation using the vector and axial Ward identities. Uses O(a) improved Wilson action and nonperturbative renormalization.


pdgid: Q123MR4
text:
CHIU 2003 determines quark masses from the pion and kaon masses using a lattice simulation with a chiral fermion action in quenched approximation.


pdgid: Q123MR0
text:
AUBIN 2004A perform three flavor dynamical lattice calculation of pseudoscalar meson masses, with continuum estimate of electromagnetic effects in the kaon masses.


pdgid: Q123MR0
text:
NELSON 2003 computes coefficients in the order p**4 chiral Lagrangian using a lattice calculation with three dynamical flavors. The ratio mass(u)/mass(d) is obtained by combining this with the chiral perturbation theory computation of the meson masses to order p**4.


pdgid: Q123MR0
text:
LEUTWYLER 1996 uses a combined fit to eta --> 3pi and psi^' --> J/psi (pi,eta) decay rates, and the electromagnetic mass differences of the pi and K.


pdgid: Q123SM
text:
BRUNO 2020 determines the light quark mass using a lattice calculation with n_{{f}} = 2+1  flavors of Wilson fermions. The scale has been set from f_{{pi}} and f_{{K}}. The tuning was done  using the masses of the lightest (pi) and strange (K) pseudoscalar mesons.


pdgid: Q123SM
text:
LYTLE 2018 combined with CHAKRABORTY 2015 determine mbar_{{s}}(3 GeV) = 84.78+-0.65 MeV  from a lattice simulation with n_{{f}} = 2+1+1 flavors. They also determine the quoted value  mbar_{{s}}(2 GeV) for n_{{f}} = 4 dynamical flavors.


pdgid: Q123SM
text:
ANANTHANARAYAN 2016 determine mbar_{{s}}(2 GeV) = 106.70+-9.36 MeV and 74.47+-7.77  MeV from fits to ALEPH and OPAL tau decay data, respectively. We have used the weighted average  of the two.


pdgid: Q123SM
text:
BODENSTEIN 2013 determines mass(s) from QCD finite energy sum rules, and the perturbative computation of the pseudoscalar correlator to five-loop order.


pdgid: Q123SM
text:
CHAKRABORTY 2015 is a lattice QCD computation that determines mass(c) and mass(c)/mass(s) using pseudoscalar mesons masses tuned on gluon field configurations with 2+1+1 dynamical flavors of HISQ quarks with u/d masses down to the physical value.


pdgid: Q123SM
text:
DAVIES 2010 and MCNEILE 2010 determine mbar_{{c}}(mu)/mbar_{{s}}(mu) = 11.85+-0.16 using a lattice computation with n_{{f}} = 2 + 1 dynamical fermions of the pseudoscalar meson masses. Mass mass(s) is obtained from this using the value of mass(c) from ALLISON 2008 or MCNEILE 2010.


pdgid: Q123SM
text:
DOMINGUEZ 2008A make determination from QCD finite energy sum rules for the pseudoscalar two-point function computed to order alpha(s)**4.


pdgid: Q123SM
text:
to obtain mbar_{{s}}(2 GeV) = 111+-6+-4+-6 MeV, where the first error is statistical,  the second and third are systematic due to the fit range and force scale uncertainties, respectively. We have combined the systematic errors linearly.


pdgid: Q123SM
text:
BAIKOV 2005 determines mbar_{{s}}(M_{{tau}}) = 100+5-3+17-19 from sum rules using the strange spectral function in tau decay. The computations were done to order alpha_{{s}}^3(),  with an estimate of the alpha_{{s}}^4() terms. We have converted the result to mu = 2 GeV.


pdgid: Q123SM
text:
GAMIZ 2005 determines mbar_{{s}}(2 GeV) from sum rules using the strange spectral function in tau decay. The computations were done to order alpha_{{s}}^2(), with an estimate of the alpha_{{s}}^3() terms.


pdgid: Q123SM
text:
NARISON 2005 determines mbar_{{s}}(2 GeV) from sum rules using the strange spectral function in tau decay. The computations were done to order alpha_{{s}}^3().


pdgid: Q123SM
text:
AOKI 2003 uses quenched lattice simulation of the meson and baryon masses with degenerate light quarks. The extrapolations are done using quenched chiral perturbation theory. Determines m(s)=113.8+-2.3+5.8-2.9 using K mass as input and m(s)=142.3+-5.8+22-0 using phi mass as input. We have performed a weighted average of these values.


pdgid: Q123SM
text:
AOKI 2003B uses lattice simulation of the meson and baryon masses with two dynamical light quarks. Simulations are performed using the O(a) improved Wilson action.


pdgid: Q123SM
text:
BECIREVIC 2003 perform quenched lattice computation using the vector and axial Ward identities. Uses O(a) improved Wilson action and nonperturbative renormalization. They also quote mbar/m(s)=24.3+-0.2+-0.6.


pdgid: Q123SM
text:
GAMIZ 2003 determines mass(s) from SU(3) breaking in the tauhadronic width. The value of V(u s) is chosen to satisfy CKM unitarity.


pdgid: Q123SM
text:
GAMIZ 2003 determines mass(s) from SU(3) breaking in the tauhadronic width. The value of V(u s) is taken from the PDG.


pdgid: Q123MR1
text:
DONOGHUE 1992 result is from a combined analysis of meson masses, eta --> 3pi using second-order chiral perturbation theory including nonanalytic terms, and (psi(2S) --> J/psi(1S) pi)/(psi(2S) --> J/psi(1S) eta).


pdgid: Q123MR1
text:
LEUTWYLER 1990B determines quark mass ratios using second-order chiral perturbation theory for the meson and baryon masses, including nonanalytic corrections.  Also uses Weinberg sum rules to determine L(7).


pdgid: Q123MR3
text:
COLANGELO 2017 obtain Q from a dispersive analysis of KLOE collaboration data on eta --> pi+ pi- pi0  decays and chiral perturbation theory input.


pdgid: Q123MR3
text:
GUO 2017 determine Q from a dispersive model fit to KLOE and WASA-at-COSY data on eta --> pi+ pi- pi0 decay and matching to chiral perturbation theory.


pdgid: Q123MR3
text:
ANISOVICH 1996 find Q from eta --> pi+ pi- pi0 decay using dispersion relations and chiral perturbation theory.


pdgid: Q004M
text:
ALEXANDROU 2021 determines the quark mass using a lattice calculation of the meson and baryon     masses with a twisted mass fermion action. We have converted mbar_{{c}}(3 GeV) = 1.036+-0.017+0.015-0.008 to     mbar_{{c}}(mbar_{{c}}). The simulations are carried out using 2+1+1 dynamical quarks with    mass(u) = mass(d)not=mass(s)not=mass(c), including gauge ensembles close to the    physical  pion point.


pdgid: Q004M
text:
HEITGER 2021 determines the charm quark mass using a n_{{f}} = 2+1 flavor lattice QCD    simulation with non-perturbatively O(a) improved Wilson fermions. They also determine mbar_{{c}}(3    GeV) = 1.007+-0.016 GeV.


pdgid: Q004M
text:
HATTON 2020 determines the charm quark mass with a lattice QCD + quenched QED simulation  using the HISQ action and including n_{{f}} = 2+1+1 flavors of sea quarks. mass(c) is tuned from  the J/psi meson mass giving mbar_{{c}}(3 GeV) = 0.9841+-0.0051 GeV.


pdgid: Q004M
text:
NARISON 2020 determines the quark mass using QCD Laplace sum rules from the B_{{c}} mass,  combined with previous determinations of the QCD condensates and c and b masses.


pdgid: Q004M
text:
ABRAMOWICZ 2018 determine mbar_{{c}}(mbar_{{c}}) = 1.290+0.046-0.041+0.062-0.014+0.003-0.031  from the production of c quarks in e p collisions at HERA using combined H1 and ZEUS  data. The experimental/fitting errors, and those from modeling and parameterization have been  combined in quadrature.


pdgid: Q004M
text:
LYTLE 2018 combined with CHAKRABORTY 15 determine mbar_{{c}}(3 GeV) = 0.9874(48) GeV from a  lattice simulation with n_{{f}} = 2+1+1 flavors. They also determine the quoted value  mbar_{{c}}(mbar_{{c}}) for n_{{f}} = 4 dynamical flavors.


pdgid: Q004M
text:
PESET 2018 determine mbar_{{c}}(mbar_{{c}}) and mbar_{{b}}(mbar_{{b}})  using an N3LO  calculation of the eta_{{c}}, eta_{{b}} and B_{{c}} masses.


pdgid: Q004M
text:
CHETYRKIN 2017 determine mbar_{{c}}(mu = 3 GeV) = 0.993+-0.008 GeV and  mbar_{{c}}(mbar_{{c}}) from a four-loop sum-rule computation of the cross-section for e+ e- --> hadrons in  the charm threshold region.


pdgid: Q004M
text:
ERLER 2017 determine mbar_{{c}}(mbar_{{c}}) = 1.272+-0.008 GeV from a three-loop QCD  sum-rule computation of the vector current correlator.  This result is for fixed  alpha_{{s}}(M(Z)) = 0.1182. Including an alpha_{{s}} uncertainty of +-0.0016, the charm  mass error increases from 8 to 9 MeV.


pdgid: Q004M
text:
DEHNADI 2015 determine mbar_{{c}}(mbar_{{c}}) using sum rules for e+ e- --> hadrons at order  alpha_{{s}}^3() (N3LO), and fitting to both experimental data and lattice results.


pdgid: Q004M
text:
ALEKHIN 2013 determines mass(c) from charm production in deep inelastic scattering at HERA using approximate NNLO QCD.


pdgid: Q004M
text:
SAMOYLOV 2013 determines mass(c) from a study of charm dimuon production in neutrino-iron scattering using the NLO QCD result for the charm quark production cross section.


pdgid: Q004M
text:
BODENSTEIN 2011 determine mbar_{{c}}(3 GeV) = 0.987+-0.009 GeV and mbar_{{c}}(mbar_{{c}}) = 1.278+-0.009 GeV using QCD sum rules for the charm quark vector current correlator.


pdgid: Q004M
text:
LASCHKA 2011 determine the c mass from the charmonium spectrum. The theoretical computation uses the heavy  potential to order 1/mass(Q) obtained by matching the short-distance perturbative result onto lattice QCD result at larger scales.


pdgid: Q004M
text:
AUBERT 2010A determine the b- and c-quark masses from a fit to the inclusive decay spectra in semileptonic B decays in the kinetic scheme (and convert it to the MSbar scheme).


pdgid: Q004M
text:
SIGNER 2009 determines the c-quark mass using non-relativistic sum rules to analyze the e+ e- --> c cbar cross-section near threshold. Also determine the PS mass (mu(F)= 0.7 GeV) = 1.50+-0.04 GeV.


pdgid: Q004M
text:
NARISON 2018A determines simultaneously mbar_{{c}}(mbar_{{c}}) and the 4-dimension gluon  condensate using QCD exponential sum rules and their ratios evaluated at the optimal scale  mu = 2.85 GeV at N2LO-N3LO of perturbative QCD and including condensates up to dimension  6 -- 8 in the (axial-)vector and (pseudo-)scalar charmonium channels.


pdgid: Q004M
text:
NARISON 2018B determines mbar_{{c}}(mbar_{{c}}) using QCD vector moment sum rules and their  ratios at N2LO-N3LO of perturbative QCD and including condensates up to dimension 8.


pdgid: Q004M
text:
BERTONE 2016 determine mbar_{{c}}(mbar_{{c}}) from HERA deep inelastic scattering data using  the FONLL scheme. Also determine mbar_{{c}}(mbar_{{c}})=1.318+-0.054+0.490-0.022 using the  fixed flavor number scheme.


pdgid: Q004M
text:
CHAKRABORTY 2015 is a lattice QCD computation using 2+1+1 dynamical flavors. Moments of pseudoscalar current-current correlators are matched to alpha_{{s}}^3()-accurate QCD perturbation theory with the eta_{{c}} meson mass tuned to experiment.


pdgid: Q004M
text:
ABRAMOWICZ 2013C determines mass(c) from charm production in deep inelastic e p scattering, using the QCD  prediction at NLO order. The uncertainties from model and parameterization assumptions, and the value of alpha_{{s}}, of +-0.03,  +- 0.02, and +- 0.02 respectively, have been combined in quadrature.


pdgid: Q004M
text:
DEHNADI 2013 determines mass(c) using QCD sum rules for the charmonium spectrum and charm continuum to order alpha_{{s}}^3 (N3LO). The statistical and systematic experimental errors of +-0.006 and +-0.009 have been combined in quadrature. The theoretical uncertainties +-0.019 from truncation of the perturbation series, +-0.010 from alpha_{{s}}, and +-0.002 from the gluon condensate have been combined in quadrature.


pdgid: Q004M
text:
NARISON 2013 determines mass(c) using QCD spectral sum rules to order alpha_{{s}}^2 (NNLO) and including condensates up to dimension 6.


pdgid: Q004M
text:
ALEKHIN 2012 determines mass(c) from heavy quark production in deep inelastic scattering at HERA using approximate NNLO QCD.


pdgid: Q004M
text:
NARISON 2012A determines mass(c) using sum rules for the vector current correlator to order alpha_{{s}}^3(), including the effect of gluon condensates up to dimension eight.


pdgid: Q004M
text:
ALEKHIN 2011 determines mass(c) from heavy quark production in deep inelastic scattering using fixed target and HERA data, and approximate NNLO QCD.


pdgid: Q004M
text:
BODENSTEIN 2010 determines mbar_{{c}}(3 GeV) = 1.008+-0.026 GeV using finite energy sum rules for the vector current correlator. The authors have converted this to mbar_{{c}}(mbar_{{c}}) using alpha_{{s}}(M_{{Z}}) = 0.1189+-0.0020.


pdgid: Q004M
text:
MCNEILE 2010 determines mass(c) by comparing the order alpha_{{s}}^3 perturbative results for the pseudo-scalar current to lattice simulations with n_{{f}} = 2+1 sea-quarks by the HPQCD collaboration.


pdgid: Q004M
text:
NARISON 2010 determines mass(c) from ratios of moments of vector current correlators computed to order alpha_{{s}}^3() and including the dimension-six gluon condensate.


pdgid: Q004M
text:
CHETYRKIN 2009 determine mass(c) and mass(b) from the e+ e- --> Q Qbar cross-section and sum rules, using an order alpha_{{s}}^3 computation of the heavy quark vacuum polarization. They also determine mass(c)(3 GeV) = 0.986+-0.013GeV.


pdgid: Q004M
text:
ALLISON 2008 determine mass(c) by comparing four-loop perturbative results for the pseudo-scalar current correlator to lattice simulations by the HPQCD collaboration. The result has been updated in MCNEILE 2010.


pdgid: Q004M
text:
KUHN 2007 determine mbar_{{c}}(mu = 3 GeV) = 0.986+-0.013 GeV and mbar_{{c}}(mbar_{{c}}) from a four-loop sum-rule computation of the cross-section for e+ e- --> hadrons in the charm threshold region.


pdgid: Q004M
text:
BOUGHEZAL 2006 result comes from the first moment of the hadronic production cross-section to order alpha_{{s}}^3().


pdgid: Q004M
text:
HOANG 2006 determines mbar_{{c}}(mbar_{{c}}) from a global fit to inclusive B decay data. The B decay distributions were computed to order alpha_{{s}}^2()beta_{{0}}(), and the conversion between different m_{{c}} mass schemes to order alpha_{{s}}^3().


pdgid: Q004M
text:
AUBERT 2004X obtain mass(c) from a fit to the hadron mass and lepton energy distributions in semileptonic B decay. The paper quotes values in the kinetic scheme. The MSbar value has been provided by the BABAR collaboration.


pdgid: Q004M
text:
HOANG 2004 determines mbar_{{c}}(mbar_{{c}}) from moments at order  alpha_{{s}}^2() of the charm production cross-section in e+ e- annihilation.


pdgid: Q004M
text:
ZYABLYUK 2003 determines m(c) by using QCD sum rules in the pseudoscalar channel and comparing with the eta(c) mass.


pdgid: Q004MSR
text:
CHAKRABORTY 2015 is a lattice QCD computation on gluon field configurations with 2+1+1 dynamical flavors of HISQ quarks with u/d masses down to the physical value. mass(c) and mass(s) are tuned from pseudoscalar meson masses.


pdgid: Q004MSR
text:
DURR 2012 determine mass(c)/mass(s) using a lattice computation with n_{{f}} = 2 dynamical fermions. The result is combined with other determinations of mass(c) to obtain mass(s)(2 GeV) = 97.0+-2.6+-2.5MeV.


pdgid: Q004MSR
text:
DAVIES 2010 determine mass(c)/mass(s) from meson masses calculated on gluon fields including u, d, and s sea quarks with lattice spacing down to 0.045 fm. The Highly Improved Staggered quark formalism is used for the valence quarks.


pdgid: Q004MSR
text:
BLOSSIER 2010 determine mass(c)/mass(s) from a computation of the hadron spectrum using n_{{f}} = 2 dynamical twisted-mass Wilson fermions.


pdgid: Q004MBR
text:
HATTON 2021 determine mbar_{{b}}(mu)/mbar_{{c}}(mu) = 4.586+-0.012 at mu = 3   GeV with a lattice QCD + quenched QED simulation using the HISQ action and including n_{{f}}  =2+1+1  flavors of sea quarks. The ratio depends weakly on mu because of QED effects.


pdgid: Q004MBR
text:
BAZAVOV 2018 determine the quark masses using a lattice computation with staggered fermions  and four active quark flavors for the u, d, s, c quarks and five  active flavors for the b quark.


pdgid: Q004MDB
text:
AUBERT 2010A determine the b- and c-quark masses from a fit to the inclusive decay spectra in semileptonic B decays in the kinetic scheme.


pdgid: Q004MDB
text:
ABDALLAH 2006B determine mass(b)-mass(c) from moments of the hadron invariant mass and lepton energy spectra in semileptonic inclusive B decays.


pdgid: Q005M
text:
APARISI 2022 determine m_{{b}} at the Higgs mass, mbar_{{b}}(m_{{H}}) = 2.60+0.36-0.31  GeV from Higgs boson decay rates at the LHC, which is used to obtain mbar_{{b}}(mbar_{{b}}).


pdgid: Q005M
text:
HATTON 2021 determine mbar_{{b}}(3 GeV) = 4.513+-0.026 GeV using a lattice QCD +  quenched QED simulation using the HISQ action and including n_{{f}} = 2+1+1 flavors of sea quarks,  by combining their mbar_{{b}}/mbar_{{c}} and mbar_{{c}} determinations.


pdgid: Q005M
text:
ABRAMOWICZ 2018 determine mbar_{{b}}(mbar_{{b}}) = 4.049+0.104-0.109+0.090-0.032+0.001-0.031  from the production of b quarks in e p collisions at HERA  using combined H1 and ZEUS  data. The experimental/fitting errors, and those from modeling and parameterization have been  combined in quadrature.


pdgid: Q005M
text:
BAZAVOV 2018 determine the b mass using a lattice computation with staggered fermions  and five active quark flavors.


pdgid: Q005M
text:
KIYO 2016 determine mbar_{{b}}(mbar_{{b}}) from the Upsilon(1S) mass at order alpha_{{s}}^3() (N3LO).


pdgid: Q005M
text:
ALBERTI 2015 determine mbar_{{b}}(mbar_{{b}}) from fits to inclusive B --> X_c e nubar decay. They also find m(b)**kin(1 GeV) = 4.553+-0.020 GeV.


pdgid: Q005M
text:
BENEKE 2015 determine mbar_{{b}}(mbar_{{b}}) using sum rules for e+ e- --> hadrons  at order N3LO including finite mass(c) effects. They find m(b)**PS(2 GeV) =  4.532+0.013-0.039 GeV, and mbar_{{b}}(mbar_{{b}}) = 4.193+0.022-0.035 GeV. The value  quoted is obtained using the four-loop conversion given in BENEKE 2016.


pdgid: Q005M
text:
COLQUHOUN 2015 determine mbar_{{b}}(mbar_{{b}}) from moments of the vector current correlator  computed with a lattice simulation using the NRQCD action.


pdgid: Q005M
text:
DEHNADI 2015 determine mbar_{{b}}(mbar_{{b}}) using sum rules for e+ e- --> hadrons at order alpha_{{s}}^3() (N3LO), and fitting to both experimental data and lattice results.


pdgid: Q005M
text:
BERNARDONI 2014 determine m_{{b}} from n_{{f}} = 2 lattice calculations using heavy quark  effective theory non-perturbatively renormalized and matched to QCD at 1/m order.


pdgid: Q005M
text:
PENIN 2014 determine mbar_{{b}}(mbar_{{b}}) = 4.169+-0.008+-0.002+-0.002 using an estimate of the order alpha_{{s}}^3() b-quark vacuum polarization function in the threshold region, including finite mass(c) effects. The errors of +-0.008 from theoretical uncertainties, and +-0.002 from alpha_{{s}} have been combined in quadrature.


pdgid: Q005M
text:
LEE 2013O determines mass(b) using lattice calculations of the Upsilon and B_{{s}} binding energies in NRQCD, including three light dynamical quark flavors. The quark mass shift in NRQCD is determined to order alpha_{{s}}^2(), with partial alpha_{{s}}^3() contributions.


pdgid: Q005M
text:
LUCHA 2013 determines mass(b) from QCD sum rules for heavy-light currents using the lattice value for f_{{B}} of 191.5+-7.3 GeV.


pdgid: Q005M
text:
BODENSTEIN 2012 determine mass(b) using sum rules for the vector current correlator and the e+ e- --> Q Qbar total cross-section.


pdgid: Q005M
text:
DIMOPOULOS 2012 determine quark masses from a lattice computation using n_{{f}} = 2 dynamical flavors of twisted mass fermions.


pdgid: Q005M
text:
LASCHKA 2011 determine the b mass from the charmonium spectrum. The theoretical computation uses the heavy  potential to order 1/mass(Q) obtained by matching the short-distance perturbative result onto lattice QCD result at larger scales.


pdgid: Q005M
text:
CHETYRKIN 2009 determine mass(c) and mass(b) from the e+ e- --> Q Qbar cross-section and sum rules, using an order alpha_{{s}}^3 (N3LO) computation of the heavy quark vacuum polarization.


pdgid: Q005M
text:
SCHWANDA 2008 measure moments of the inclusive photon spectrum in B --> X_s gamma decay to determine m_{{b}}^1S(). We have converted this to MSbar scheme.


pdgid: Q005M
text:
NARISON 2018A determines mbar_{{b}}(mbar_{{b}}) as a function of alpha_{{s}} using QCD  exponential sum rules and their ratios evaluated at the optimal scale mu = 9.5 GeV at  N2LO-N3LO of perturbative QCD and including condensates up to dimension 6 -- 8 in the  (axial-)vector and (pseudo-)scalar bottomonium channels.


pdgid: Q005M
text:
NARISON 2018B determines mbar_{{b}}(mbar_{{b}}) using QCD vector moment sum rules and their  ratios at N2LO-N3LO of perturbative QCD and including condensates up to dimension 8.


pdgid: Q005M
text:
ABRAMOWICZ 2014A determine mbar_{{b}}(mbar_{{b}}) = 4.07+-0.14+0.01-0.07+0.05-0.00+0.08-0.05 from the production of b quarks in e p collisions at HERA. The errors due to fitting, modeling, PDF parameterization, and theoretical QCD uncertainties due to the values of alpha_{{s}}, m_{{c}}, and the renormalization scale mu have been combined in quadrature.


pdgid: Q005M
text:
AYALA 2014A determine mbar_{{b}}(mbar_{{b}}) from the Upsilon(1S) mass computed to N3LO order in perturbation theory using a renormalon subtracted scheme.


pdgid: Q005M
text:
NARISON 2013 determines mass(b) using QCD spectral sum rules to order alpha_{{s}}^2 (NNLO) and including condensates up to dimension 6.


pdgid: Q005M
text:
NARISON 2013A determines mass(b) using HQET sum rules to order alpha_{{s}}^2 (NNLO) and the B meson mass and decay constant.


pdgid: Q005M
text:
HOANG 2012 determine mass(b) using non-relativistic sum rules for the Upsilon system at order alpha_{{s}}^2 (NNLO) with renormalization group improvement.


pdgid: Q005M
text:
NARISON 2012 determines mass(b) using exponential sum rules for the vector current correlator to order alpha_{{s}}^3(), including the effect of gluon condensates up to dimension eight.


pdgid: Q005M
text:
Determines mass(b) to order alpha_{{s}}^3() (N3LO), including the effect of gluon condensates up to dimension eight combining the methods of NARISON 2012 and NARISON 2012A.


pdgid: Q005M
text:
NARISON 2012A determines mass(b) using sum rules for the vector current correlator to order alpha_{{s}}^3(), including the effect of gluon condensates up to dimension eight.


pdgid: Q005M
text:
MCNEILE 2010 determines mass(b) by comparing order alpha_{{s}}^3 (N3LO) perturbative results for the pseudo-scalar current to lattice simulations with n_{{f}} = 2+1 sea-quarks by the HPQCD collaboration.


pdgid: Q005M
text:
NARISON 2010 determines mass(b) from ratios of moments of vector current correlators computed to order alpha_{{s}}^3() and including the dimension-six gluon condensate. These values are taken from the erratum to that reference.


pdgid: Q005M
text:
ABDALLAH 2008D determine mbar_{{b}}(M_{{Z}}) = 3.76+-1.0 GeV from a leading order study of four-jet rates at LEP.


pdgid: Q005M
text:
GUAZZINI 2008 determine mbar_{{b}}(mbar_{{b}}) from a quenched lattice simulation of heavy meson masses. The +-0.08 is an estimate of the quenching error.


pdgid: Q005M
text:
DELLA-MORTE 2007 determine mbar_{{b}}(mbar_{{b}}) from a computation of the spin-averaged B meson mass using quenched lattice HQET at order 1/m. The +-0.08 is an estimate of the quenching error.


pdgid: Q005M
text:
KUHN 2007 determine mbar_{{b}}(mu = 10 GeV) = 3.609+-0.025 GeV and mbar_{{b}}(mbar_{{b}}) from a four-loop sum-rule computation of the cross-section for e+ e- --> hadrons in the bottom threshold region.


pdgid: Q005M
text:
ABDALLAH 2006D determine mass(b)(M_{{Z}}) = 2.85+-0.32 GeV from Z-decay three-jet events containing a b-quark.


pdgid: Q005M
text:
BOUGHEZAL 2006 MSbar scheme result comes from the first moment of the hadronic production cross-section to order alpha_{{s}}^3().


pdgid: Q005M
text:
PINEDA 2006 MSbar scheme result comes from a partial NNLL evaluation (complete at order alpha_{{s}}^2 (NNLO)) of sum rules of the bottom production cross-section in  e+ e-  annihilation.


pdgid: Q005M
text:
GRAY 2005 determines mbar_{{b}}(mbar_{{b}}) from a lattice computation of the Upsilon spectrum. The simulations have 2+1 dynamical light flavors. The b quark is implemented using NRQCD.


pdgid: Q005M
text:
AUBERT 2004X obtain mass(b) from a fit to the hadron mass and lepton energy distributions in semileptonic B decay. The paper quotes values in the kinetic scheme. The MSbar value has been provided by the BABAR collaboration.


pdgid: Q005M
text:
BAUER 2004 determine mass(b), mass(c) and  mass(b)-mass(c) by a global fit to inclusive B decay spectra.


pdgid: Q005M
text:
HOANG 2004 determines mbar_{{b}}(mbar_{{b}}) from moments at order  alpha_{{s}}^2() of the bottom production cross-section in e+ e- annihilation.


pdgid: Q005M
text:
MCNEILE 2004 use lattice QCD with dynamical light quarks and a static heavy quark to compute the masses of heavy-light mesons.


pdgid: Q005M
text:
BAUER 2003 determine the b quark mass by a global fit to B decay observables. The experimental data includes lepton energy and hadron invariant mass moments in semileptonic B --> X_c lepton nu_lepton decay, and the inclusive photon spectrum in B --> X_s gamma decay. The theoretical expressions used are of order 1/m**3, and alpha(s)**2beta(0).


pdgid: Q005M
text:
CORCELLA 2003 determines mbar_{{b}} using sum rules computed to order alpha(s)**2. Includes charm quark mass effects.


pdgid: Q005M
text:
MAHMOOD 2003 determines m(b)**1S by a fit to the lepton energy moments in B --> X_c lepton nu_lepton decay. The theoretical expressions used are of order 1/m**3 and alpha(s)**2beta(0). We have converted their result to the MSbar scheme.


pdgid: Q005M
text:
BRAMBILLA 2002 determine mbar_{{b}}(mbar_{{b}}) from a computation of the Upsilon(1S) mass to order alpha_{{s}}^4(), including finite m_{{c}} corrections.


pdgid: Q005A00
text:
CHAKRABORTY 2015 determine mass(b)/mass(s) from lattice QCD using the HISQ action and  including n_{{f}} = 2+1+1 flavors of sea quarks.


pdgid: Q007TP
text:
HAYRAPETYAN 2024F based on up to 5 and 20 fb^{-1} of p p data at sqrt(s) = 7 and 8  TeV, respectively. The combination includes 15 input measurements in t tbar events that  exploit both semileptonic and hadronic decays of the top quark as well as t-channel single-top  events.


pdgid: Q007TP
text:
AAD 2023N based on 36.1 fb^{-1} of p p data at sqrt(s) = 13 TeV. The second error is    the sum of systematic (+-0.66) and that from changing parton-shower gluon recoil scheme    (+-0.25) uncertainties. The distribution of the invariant mass mass(lepton mu)  (lepton  from W and mu from  b-hadron  decay)  is used, which is  less sensitive to  jet energy  uncertainties and top  production modelling.


pdgid: Q007TP
text:
TUMASYAN 2023BB based on 36.3 fb^{-1} of p p data at sqrt(s) = 13 TeV. For each  event, the mass is reconstructed from a kinematic fit of the decay products to a t tbar  hypothesis. A profile likelihood method is applied using up to four observables per event.


pdgid: Q007TP
text:
TUMASYAN 2023Z based on 138 fb^{-1} of p p data at sqrt(s) = 13 TeV. The second error  is the sum of experimental (+-0.61), model (+-0.47), and theoretical (+-0.23)  uncertainties. The products of the hadronic decay of a top quark with pT > 400 GeV, in  the lepton + jets channel of t tbar, are reconstructed as a single jet. The top quark mass  is determined from the normalized differential cross section measurement in the mass(jet)  distribution.


pdgid: Q007TP
text:
TUMASYAN 2021G based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. Events are   selected by requiring 1lepton + 2jets(1b jet) final state.


pdgid: Q007TP
text:
SIRUNYAN 2020AR based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. The products  of the hadronic decay of a top quark with pT > 400 GeV, in the lepton + jets  channel of t tbar are reconstructed as a single jet. The top quark mass is determined from the  normalized differential cross section measurement in the mass(jet) distribution.


pdgid: Q007TP
text:
SIRUNYAN 2019AP based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. A kinematical  fit is applied to each event assuming the signal event topology. mass(t) is determined  simultaneously with a jet energy scale factor (JSF). The second error represents stat.+JSF.  Modeling uncertainties are larger than in the measurements at sqrt(s) = 7 and 8 TeV because of the  use of new alternative color reconnection models.


pdgid: Q007TP
text:
SIRUNYAN 2019AR based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. Obtained from  a simultaneous fit of the cross section and the top quark mass in the POWHEG simulation. The cross  section is used also to extract the MSbar mass and the strong coupling constant for different  PDF sets.


pdgid: Q007TP
text:
TEVEWWG 2016 is the latest Tevatron average (July 2016) provided by the Tevatron Electroweak  Working Group. It takes correlated uncertainties into account and has a chi^2 of 10.8 for 11  degrees of freedom.


pdgid: Q007TP
text:
AABOUD 2019AC based on 20.2 fb**-1 in p p collisions at sqrt(s) = 8 TeV. Uses  optimized event selection to suppress less-well-reconstructed events and template fits to determine  mass(t) together with a global jet energy scale factor and a relative b-to-light-jet energy  scale factor.


pdgid: Q007TP
text:
AABOUD 2019AC is an ATLAS combination of 7 and 8 TeV top-quark mass determination in the  dilepton, lepton + jets, and all jets channels.


pdgid: Q007TP
text:
SIRUNYAN 2019AP based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. A combined  measurement using the lepton+jets and all-jets channels through a single likelihood function.  See SIRUNYAN 2018DE.


pdgid: Q007TP
text:
SIRUNYAN 2018DE based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. mass(t) is  determined simultaneously with an overall jet energy scale factor constrained by the mass of the  hadronically decayed W. Compared to the Run 1 analysis a more advanced treatment of modeling  uncertainties are employed, in particular concerning color-reconnection models. Superseded by TUMASYAN 2023BB.


pdgid: Q007TP
text:
AABOUD 2017AH based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV. Uses template  fits to the ratio of the masses of three-jets (from t candidate) and dijets (from W  candidate), to suppress jet energy scale uncertainty.  Large QCD background is modelled using a  data-driven method.


pdgid: Q007TP
text:
ABAZOV 2017B is a combination of measurements of the top quark mass by D0 in the lepton+jets  and dilepton channels, using all data collected in Run I (1992 -- 1996) at sqrt(s) = 1.8  TeV and Run II (2001 -- 2011) at sqrt(s) = 1.96 TeV of the Tevatron, corresponding to  integrated luminosities of 0.1 fb^{-1} and 9.7 fb^{-1}, respectively.


pdgid: Q007TP
text:
SIRUNYAN 2017L based on 19.7 fb^{-1} of p p data at sqrt(s) = 8 TeV.   mass(t) is reconstructed from a fit to the invariant mass distribution of mu nu b, where    p_{{T}}^miss and W mass constraint are used to reconstruct nu momentum. The number of    events for various contributions, except for the t-channel single top one, are fixed to the    values extracted from simulation. Superseded by TUMASYAN 2021G.


pdgid: Q007TP
text:
SIRUNYAN 2017N based on 19.7 fb^{-1} of p p data at sqrt(s) = 8 TeV. The fully  hadronic decay of a highly-boosted t is reconstructed in the lepton+jets channel and  unfolded at the particle level.  The sensitivity of the peak position of the m_jet distribution  is used to test quality of the modelling by the simulation.


pdgid: Q007TP
text:
SIRUNYAN 2017O based on 19.7 fb^{-1} of p p data at sqrt(s) = 8 TeV. Analysis is  based on the kinematical observables M(b lepton), M_T2 and M(b lepton nu). A  fit is performed to determine mass(t) and an overall jet energy scale factor simultaneously.


pdgid: Q007TP
text:
AABOUD 2016T based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV. The analysis is  refined using the p_{{T}} and invariant mass distributions of lepton+b-jet system. A  combination with measurements from sqrt(s) = 7 TeV data in the dilepton and lepton+jets channels  gives 172.84+-0.34+-0.61 GeV.


pdgid: Q007TP
text:
AABOUD 2016T is an ATLAS combination of 8 TeV top-quark mass in the dilepton channel with  previous measurements from sqrt(s) = 7 TeV data in the dilepton and lepton + jets channels.


pdgid: Q007TP
text:
ABAZOV 2016 based on 9.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV.  Employs improved  fit to   minimize statistical errors and improved jet energy calibration, using  lepton + jets mode,  which   reduces error of jet energy scale. Based on previous determination in  ABAZOV 2012AB  with  increased integrated  luminosity and improved fit and calibrations.


pdgid: Q007TP
text:
ABAZOV 2016D based on 9.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV,  using the matrix element technique. Based on previous determination in ABAZOV 2011R with  increased integrated luminosity. There is a strong correlation with the determination in  ABAZOV 2016. (See ABAZOV 2017B.)


pdgid: Q007TP
text:
KHACHATRYAN 2016AK based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. Combination  of the three top mass measurements in KHACHATRYAN 2016AK and with the CMS results at  sqrt(s) = 7 TeV gives 172.44+-0.13+-0.47 GeV.


pdgid: Q007TP
text:
KHACHATRYAN 2016AK based on 19.7 fb^{-1} of p p data at sqrt(s) = 8 TeV. Combination  of the three top mass measurements in KHACHATRYAN 2016AK and with the CMS results at sqrt(s)  = 7 TeV.


pdgid: Q007TP
text:
KHACHATRYAN 2016AL based on 19.7 fb**-1 in p p collisions at sqrt(s) = 8 TeV.  Determined from the invariant mass distribution of leptons and reconstructed secondary vertices  from b decays using only charged particles. The uncertainty is dominated by modeling of b  fragmentation and top p_{{T}} distribution.


pdgid: Q007TP
text:
KHACHATRYAN 2016CB based on 666 candidate reconstructed events corresponding to 19.7  fb**-1 of p p data at sqrt(s) = 8 TeV. The measurement exploits correlation of mass(t)  with M(J/psi lepton) in the same top quark decay, using a high-purity event sample. A study on  modeling of b-quark fragmentation is given in Sec.3.3.


pdgid: Q007TP
text:
AAD 2015AW based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. Uses template fits to  the ratio of the   masses of three-jets (from t candidate) and dijets (from W candidate).  Large background from multijet production is modeled with data-driven  methods.


pdgid: Q007TP
text:
AAD 2015BF based on 4.6 fb**-1 in p p collisions at sqrt(s) = 7 TeV. Using a  three-dimensional template likelihood technique the lepton plus jets (>=1b-tagged)  channel gives  172.33+-0.75+-1.02 GeV, while exploiting a one dimensional template method  using  mass(lepton b) the dilepton channel (1 or  2b-tags) gives  173.79+-0.54+-1.30 GeV.   The results are combined.


pdgid: Q007TP
text:
AALTONEN 2015D based on 9.1 fb**-1 of p pbar data at sqrt(s) = 1.96 TeV. Uses a  template technique to fit a distribution of a variable defined by a linear combination of variables  sensitive and insensitive to jet energy scale to optimize reduction of systematic errors.  b-tagged and non-b-tagged events are separately analyzed and combined.


pdgid: Q007TP
text:
Based on 9.3 fb**-1 of p pbar data at sqrt(s) = 1.96 TeV. Multivariate algorithm is used to  discriminate signal from backgrounds, and templates are used to measure mass(t).


pdgid: Q007TP
text:
Based on 9.7 fb**-1 of p pbar data at sqrt(s) = 1.96 TeV. A matrix element method is used to calculate  the probability of an  event to be signal or background, and the overall jet energy   scale is  constrained in situ  by mass(W). See ABAZOV 2015G for further details.


pdgid: Q007TP
text:
Based on 3.54 fb**-1 of p p data at sqrt(s) = 7 TeV. The mass is reconstructed for each  event employing a kinematic fit of the jets to a ttbar hypothesis. The combination with the  pervious CMS measurements in the dilepton and the  lepton+jets channels gives 173.54+-0.33+-0.96 GeV.


pdgid: Q007TP
text:
Based on 8.7 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. Events with an identified charged lepton or small notET are rejected from the event sample, so that the measurement is statistically independent from those in the lepton + jets and all hadronic channels while being sensitive to those events with a tau lepton in the final state.


pdgid: Q007TP
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2013S studied events with di-lepton + notET + >=2 b-jets, and looked for kinematical endpoints of MT2, MT2(T), and subsystem variables.


pdgid: Q007TP
text:
AAD 2012I based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. Uses 2d-template  analysis (MT) with mass(t) and jet energy scale factor (JSF) from mass(W) mass fit.


pdgid: Q007TP
text:
Based on 8.7 fb**-1 of data in p pbar collisions at 1.96 TeV.  The JES is calibrated by using the dijet mass from the W boson decay.


pdgid: Q007TP
text:
Based on 5.8 fb**-1 of data in p pbar collisions at 1.96 TeV the quoted value is   mass(t) = 172.5+-1.4(stat)+-1.0(JES)+-1.1(syst) GeV. The  measurement is performed with a liklihood fit technique which simultaneously determines mass(t)  and JES (Jet Energy Scale).


pdgid: Q007TP
text:
Based on 4.3 fb**-1 of data in p-pbar collisions at 1.96 TeV. The measurement reduces the JES uncertainty by using the single lepton channel study of ABAZOV 2011P.


pdgid: Q007TP
text:
Combination with the result in 1 fb**-1 of preceding data reported in ABAZOV 09AH as well as the MWT result  of ABAZOV 2011R with a statistical correlation of 60%.


pdgid: Q007TP
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. Uses an analytical matrix weighting technique (AMWT) and full kinematic analysis (KIN).


pdgid: Q007TP
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. The first error is statistical and JES combined, and the second is systematic. Ideogram method is used to obtain 2D liklihood for the kinematical fit with two parameters mtop and JES.


pdgid: Q007TP
text:
Based on 3.2 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. The first error is from statistics and JES combined, and the latter is from the other systematic uncertainties. The result is obtained using an unbinned maximum likelihood method where the top quark mass and the JES are measured simultaneously, with Delta_{{JES}} = 0.3+-0.3(stat).


pdgid: Q007TP
text:
Based on 5.7 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. Events with an identified charged lepton or small notET are rejected from the event sample, so that the measurement is statistically independent from those in the lepton + jets and all hadronic channels while being sensitive to those events with a tau lepton in the final state. Supersedes AALTONEN 2007B.


pdgid: Q007TP
text:
AALTONEN 2011E based on 5.6 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV.  Employs a multi-dimensional template likelihood technique where the lepton plus jets (one or two  b-tags) channel gives 172.2+-1.2+-0.9 GeV while the dilepton channel yields 170.3+-2.0+-3.1  GeV. The results are combined. OUR EVALUATION includes the measurement in the dilepton channel only.


pdgid: Q007TP
text:
Uses a likelihood fit of the lepton pT distribution based on 2.7 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV.


pdgid: Q007TP
text:
Based on 3.6 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. ABAZOV 2011P reports 174.94+-0.83+-0.78+-0.96 GeV, where the first uncertainty is from statistics, the second from JES, and the last from other systematic uncertainties. We combine the JES and systematic uncertainties. A matrix-element method is used where the JES uncertainty is constrained by the W mass. ABAZOV 2011P describes a measurement based on 2.6 fb**-1 that is combined with ABAZOV 2008AH, which employs an independent 1 fb**-1 of data.


pdgid: Q007TP
text:
Based on a matrix-element method which employs 5.4 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. Superseded by ABAZOV 2012AB.


pdgid: Q007TP
text:
Based on 36 pb**-1 of p p collisions at sqrt(s) = 7 TeV. A Kinematic Method using b-tagging and an analytical Matrix Weighting Technique give consistent results and are combined. Superseded by CHATRCHYAN 2012BA.


pdgid: Q007TP
text:
Based on 5.6 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. The likelihood calculated using a matrix element method gives mass(t) = 173.0+-0.7(stat)+-0.6(JES)+-0.9(syst) GeV, for a total uncertainty of 1.2 GeV.


pdgid: Q007TP
text:
Based on 3.4 fb**-1 of p pbar collisions at sqrt(s) = 1.96 TeV. The result is obtained by combining the MT2 variable method and the NWA (Neutrino Weighting Algorithm). The MT2 method alone gives mass(t) = 168.0+4.8-4.0(stat)+-2.9(syst) GeV with smaller systematic error due to small JES uncertainty.


pdgid: Q007TP
text:
Based on 1.9 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. The result is from the measurement using the transverse decay length of b-hadrons and that using the transverse momentum of the W decay muons, which are both insensitive to the JES (jet energy scale) uncertainty. OUR EVALUATION uses only the measurement exploiting the decay length significance which yields 166.9+9.5-8.5(stat)+-2.9 (syst) GeV. The measurement that uses the lepton transverse momentum is excluded from the average because of a statistical correlation with other samples.


pdgid: Q007TP
text:
Based on 2.9 fb**-1 of p pbar collisions at sqrt(s) = 1.96 TeV. The first error is from statistics and JES uncertainty, and the latter is from the other systematics. Neural-network-based kinematical selection of 6 highest E(T) jets with a vtx b-tag is used to distinguish signal from background. Superseded by AALTONEN 2012G.


pdgid: Q007TP
text:
Based on 2 fb**-1 of data at sqrt(s) = 1.96 TeV. The top mass is obtained from the measurement  of the invariant mass of the lepton (e or mu) from W decays and the soft mu in b-jet. The result is insensitive to jet energy scaling.


pdgid: Q007TP
text:
Based on 1.9 fb**-1 of data at sqrt(s) = 1.96 TeV. The first error is from statistics and  jet energy scale uncertainty, and the latter is from the other systematics. Matrix element method with effective propagators.


pdgid: Q007TP
text:
Based on 943 pb**-1 of data at sqrt(s) = 1.96 TeV. The first error is from statistical and jet-energy-scale uncertainties, and the latter is from other systematics. AALTONEN 2009K selected 6 jet events with one or  more vertex b-tags and used the tree-level matrix element to construct template models of signal and background.


pdgid: Q007TP
text:
Based on 1.9 fb**-1 of data at sqrt(s) = 1.96 TeV. The first error is from statistical and jet-energy-scale (JES) uncertainties, and the second is from other systematics. Events with lepton + jets and those with dilepton + jets were simultaneously fit to constrain mass(t) and JES.  Lepton + jets data only give mass(t) = 171.8+-2.2 GeV, and dilepton data only give mass(t) = 171.2+5.3-5.1 GeV.


pdgid: Q007TP
text:
Based on 2 fb**-1 of data at sqrt(s) = 1.96 TeV. Matrix Element method. Optimal selection criteria  for candidate events with two high pT leptons, high notET, and two or more jets with and  without b-tag are obtained by neural network with neuroevolution technique  to minimize the statistical error of mass(t).


pdgid: Q007TP
text:
Based on 2.9 fb**-1 of data at sqrt(s) = 1.96 TeV. Mass mass(t) is estimated from the likelihood for the eight-fold kinematical solutions in the plane of the azimuthal angles of the two neutrino momenta.


pdgid: Q007TP
text:
Based on 1 fb**-1 of data at sqrt(s) = 1.96 TeV. Events with two identified leptons, and those with one lepton  plus one isolated track and a b-tag were used to constrain mass(t). The result is a combination of the nuWT  (nu Weighting Technique) result of 176.2+-4.8+-2.1 GeV and the MWT (Matrix-element Weighting Technique)  result of 173.2+-4.9+-2.0 GeV.


pdgid: Q007TP
text:
Reports measurement of 170.7+4.2-3.9+-2.6+-2.4 GeV based on 1.2 fb**-1 of data at sqrt(s) = 1.96 TeV. The last error is due to the theoretical uncertainty on sigma(t tbar). Without the cross-section constraint a top mass of 169.7+5.2-4.9+-3.1 GeV is obtained.


pdgid: Q007TP
text:
Result is based on 1 fb**-1 of data at sqrt(s) = 1.96 TeV. The first error is from statistics and jet energy scale uncertainty, and the latter is from the other systematics.


pdgid: Q007TP
text:
Based on 311 pb**-1 of data at sqrt(s) = 1.96 TeV. Events with 4 or more jets with E(T)> 15 GeV, significant missing E(T), and secondary vertex b-tag are used in the fit. About 44% of the signal acceptance is from tau nu + 4 jets. Events with identified e or mu are vetoed to provide a statistically independent measurement.


pdgid: Q007TP
text:
Based on 955 pb**-1 of data sqrt(s) = 1.96 TeV. mass(t) and JES  (Jet Energy Scale) are fitted simultaneously, and the first error contains the JES contribution of 1.5 GeV.


pdgid: Q007TP
text:
Based on 425 pb**-1 of data at sqrt(s) = 1.96 TeV. The first error  is a combination of statistics and JES (Jet Energy Scale) uncertainty, which has been measured simultaneously to give JES = 0.989+-0.029(stat).


pdgid: Q007TP
text:
Based on 370 pb**-1 of data at sqrt(s) = 1.96 TeV. Combined result of MWT (Matrix-element Weighting Technique) and nuWT (nu Weighting Technique) analyses is 178.1+-6.7+-4.8GeV.


pdgid: Q007TP
text:
Based on 1.0 fb**-1 of data at sqrt(s) = 1.96 TeV. ABULENCIA 2007D improves the matrix element description by including the effects of initial-state radiation.


pdgid: Q007TP
text:
Based on 695 pb**-1 of data at sqrt(s) = 1.96 TeV. The transverse decay length of the b  hadron is used to determine mass(t), and the result is free from the JES (jet energy scale) uncertainty.


pdgid: Q007TP
text:
Based on ~400 pb**-1 of data at sqrt(s) = 1.96 TeV. The first error includes statistical and systematic jet energy scale uncertainties, the second error is from the other systematics. The result is obtained with the b-tagging information.  The result without b-tagging is 169.2+5.0-7.4+1.5-1.4 GeV. Superseded by ABAZOV 2008AH.


pdgid: Q007TP
text:
Based on the all hadronic decays of t tbar pairs. Single b-quark tagging via the decay chain b --> c --> mu was used to select signal enriched multijet events.  The result was obtained by the maximum likelihood method after bias correction.


pdgid: Q007TP
text:
Obtained by re-analysis of the lepton + jets candidate events that led to ABBOTT 1998F. It is based upon the maximum likelihood method which makes use of the leading order matrix elements.


pdgid: Q007TP
text:
Obtained by combining the measurements in the lepton + jets [AFFOLDER 2001], all-jets [ABE 1997R, ABE 1999B], and dilepton [ABE 1999B] decay topologies.


pdgid: Q007TP
text:
Obtained by combining the D0 result mass(t) (GeV) = 168.4+-12.3+-3.6 from 6 di-lepton events (see also ABBOTT 1998D) and mass(t) (GeV) = 173.3+-5.6+-5.5 from lepton+jet events (ABBOTT 1998F).


pdgid: Q007TP
text:
Obtained by combining the CDF results of mass(t) (GeV)=167.4+-10.3+-4.8 from 8dilepton events, mass(t) (GeV)=175.9+-4.8+-5.3 from lepton+jet events (ABE 1998E), and mass(t) (GeV)=186.0+-10.0+-5.7 from all-jet events (ABE 1997R). The systematic errors in the latter two measurements are changed in this paper.


pdgid: Q007TP
text:
Obtained by combining the D0 results of mass(t)(GeV)=168.4+-12.3+-3.6 from 6 dilepton events and mass(t)(GeV)=173.3+-5.6+-5.5 from 77 lepton+jet events.


pdgid: Q007TP
text:
Obtained by combining the D0 results from dilepton and lepton+jet events, and the CDF results (ABE 1999B) from dilepton, lepton+jet events, and all-jet events.


pdgid: Q007TP
text:
Based on the first observation of all hadronic decays of t tbar pairs. Single b-quark tagging with jet-shape variable constraints was used to select signal enriched multi-jet events.


pdgid: Q007TP2
text:
AAD 2019G based on 20.2 fb**-1 of data in p p collisions at sqrt(s) = 8 TeV.  Normalized t tbar + 1-jet differential cross section as a function of t tbar j invariant  mass is measured in the lepton + jets mode. The unfolded parton-level distribution is compared  with the NLO QCD prediction.  The three errors are from statitics, systematics, and theory.


pdgid: Q007TP2
text:
Based on 5.3 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. ABAZOV 2011S uses the measured t tbar production cross section of 8.13+1.02-0.90 pb [ABAZOV 2011E] in the lepton plus jets channel to obtain the top quark MSbar mass by using an approximate NNLO computation (MOCH 2008, LANGENFELD 2009). The corresponding top quark pole mass is 167.5+5.4-4.9 GeV. A different theory calculation (AHRENS 2010, AHRENS 2010A) is also used and yields m(t)**MSbar = 154.5+5.0-4.3 GeV.


pdgid: Q007TP2
text:
Based on 1 fb**-1 of data at sqrt(s) = 1.96 TeV. Uses the lepton + jets, lepton lepton, and lepton tau + jets channels. ABAZOV 2009AG extract the pole mass of the top quark using two different calculations that yield 169.1+5.9-5.2 GeV (MOCH 2008, LANGENFELD 2009) and 168.2+5.9-5.4 GeV (KIDONAKIS 2008).


pdgid: Q007TP2
text:
Based on 1 fb**-1 of data at sqrt(s) = 1.96 TeV. Uses the lepton lepton and lepton tau + jets channels. ABAZOV 2009R extract the pole mass of the top quark using two different calculations that yield 173.3+9.8-8.6 GeV (MOCH 2008, LANGENFELD 2009) and 171.5+9.9-8.8 GeV (CACCIARI 2008).


pdgid: Q007TP4
text:
AAD 2023AY based on 5 fb**-1 and 20 fb**-1 of p p data at sqrt(s) = 7 TeV and 8   TeV, respectively. The result is obtained from the combined inclusive cross section measurements   and the NNLO+NNLL predictions fixing alpha(s)(mass(Z)) = 0.118.


pdgid: Q007TP4
text:
TUMASYAN 2023R based on 36.3 fb**-1 of data in p p collisions at sqrt(s) = 13 TeV.   Normalized t tbar + 1-jet differential cross section as a function of t tbar j invariant   mass is measured in the dilepton mode. The unfolded parton-level distribution is compared with the   NLO QCD prediction. The result depends on the PDF and ABMP16NLO is used.


pdgid: Q007TP4
text:
AAD 2020Q based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. The result is  obtained from the inclusive cross section measurement and the NNLO+NNLL prediction.


pdgid: Q007TP4
text:
SIRUNYAN 2017W based on 2.2 fb**-1 of p p data at sqrt(s) = 13 TeV. Events are  categorized according to the jet multiplicity and the number of b-tagged jets. The pole mass is  obtained from the inclusive cross section measurement and the NNLO prediction.


pdgid: Q007TP4
text:
ABAZOV 2016F based on 9.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV.  The result is obtained from the inclusive cross section measurement and the NNLO+NNLL prediction.


pdgid: Q007TP4
text:
AAD 2015BW based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. Uses normalized  differential cross section for t tbar + 1 jet as a function of the inverse of the invariant  mass of the t tbar + 1 jet system. The measured cross section is corrected to the parton level.  Then a fit to the data using NLO + parton shower prediction is performed.


pdgid: Q007TP4
text:
SIRUNYAN 2020BV based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. The error  accounts for both experimental and theoretical uncertainties. Events containing two oppositely  charged leptons are used. The pole mass is particularly sensitive to the t tbar invariant mass  distribution close to the threshold. However, the Coulomb and soft gluon resummation effects are  not taken into account, hence, an additional theoretical uncertainty of order +1 GeV is assumed.


pdgid: Q007TP4
text:
AABOUD 2017BC based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV. The pole mass is  extracted from a fit of NLO predictions to eight single lepton and dilepton differential  distributions, while simultaneously constraining uncertainties due to PDFs and QCD scales. The  three reported uncertainties come from statistics, experimental systematics, and theoretical  sources.


pdgid: Q007TP4
text:
KHACHATRYAN 2016AW based on 5.0 fb**-1 of p p collisions at 7 TeV and 19.7 fb**-1  at 8 TeV. The 7 TeV data include those used in CHATRCHYAN 2014. The result is obtained from  the inclusive cross sections.


pdgid: Q007TP4
text:
AAD 2014AY used CS(t tbar) for e mu events. The result is a combination of the measurements mass(t)  = 171.4+-2.6 GeV based on 4.6 fb**-1 of data at 7 TeV and  mass(t) = 174.1+-2.6 GeV  based on 20.3 fb**-1 of data at 8 TeV.


pdgid: Q007TP4
text:
CHATRCHYAN 2014 used CS(t tbar) from p p collisions at sqrt(s) = 7 TeV measured in  CHATRCHYAN 2012AX to obtain mass(t)(pole) for alpha_{{s}}(mass(Z)) = 0.1184+-0.0007.  The errors have been corrected in KHACHATRYAN 2014K.


pdgid: Q007CPT
text:
TUMASYAN 2021G based on 35.9 fb^{-1} of p p data at sqrt(s) = 13 TeV. Events are   selected by requiring 1lepton + 2jets(1b jet) final state. An average top mass of   172.13+0.76-0.77 GeV/c**2 is obtained.


pdgid: Q007CPT
text:
CHATRCHYAN 2017 based on 19.6 fb**-1 of p p data at sqrt(s) = 8 TeV and an average  top mass of 172.84+-0.10(stat) GeV is obtained.


pdgid: Q007CPT
text:
Based on 8.7 fb**-1 of p pbar collisions at sqrt(s) = 1.96 TeV and an average top mass of 172.5 GeV/c**2.


pdgid: Q007CPT
text:
Based on 4.96 fb**-1 of p p data at sqrt(s) = 7 TeV. Based on the fitted mass(t) for lepton+ and lepton- events using the Ideogram method.


pdgid: Q007CPT
text:
Based on a matrix-element method which employs 3.6 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV.


pdgid: Q007CPT
text:
Based on a template likelihood technique which employs 5.6 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV.


pdgid: Q007W
text:
Based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV. Gamma_{{t}} is measured using a  template fit to the reconstructed invariant mass of the b-jet of the semileptonically decaying  top quark and the corresponding lepton, and  the angular distance between j_{{b}} and j_{{l}} in  hadronic top decay. Signal templates are generated by reweighting events at parton-level to  Breit-Wigner distribution with different Gamma_{{t}} hypotheses for mass(t) = 172.5 GeV. The  result is consistent with the NNLO SM prediction of 1.322 GeV.


pdgid: Q007W
text:
Based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The result is obtained by combining  the measurement of R = Gamma(t --> W b)/Gamma(t --> W q (q=b,s,d)) and a previous CMS measurement  of the t-channel single top production cross section of CHATRCHYAN 2012BQ, by using the theoretical calculation of  Gamma(t --> W b) for mass(t) = 172.5 GeV.


pdgid: Q007W
text:
Based on 5.4 fb**-1 of data in p pbar collisions at 1.96 TeV. Gamma(t --> b W) = 1.87+0.44-0.40 GeV is obtained from the observed t-channel single top quark  production cross section, whereas B(t --> b W) = 0.90+-0.04 is used assuming Sum(q)B(t --> q W) = 1. The result is valid for mass(t) = 172.5 GeV. See the paper for the values for mass(t) = 170 or 175 GeV.


pdgid: Q007W
text:
Based on 8.7 fb**-1 of data. The two sided 68% CL interval is 1.10 GeV < Gamma_{{t}} < 4.05 GeV for mass(t) = 172.5 GeV.


pdgid: Q007W
text:
Based on 2.3 fb**-1 in p pbar collisions at sqrt(s) = 1.96 TeV. ABAZOV 2011B extracted Gamma_{{t}}() from the partial width Gamma(t --> W b) = 1.92+0.58-0.51 GeV measured using the t-channel single top production cross section, and the branching fraction br{t --> W b} = 0.962+0.068-0.066(stat)+0.064(syst). The Gamma(t --> W b) measurement gives the 95% CL lowerbound of Gamma(t --> W b) and hence that of Gamma_{{t}}().


pdgid: Q007W
text:
Results are based on 4.3 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. The top quark mass and the hadronically decaying W boson mass are reconstructed for each candidate events and compared with templates of different top quark width. The two sided 68% CL interval is 0.3 GeV< Gamma_{{t}}()< 4.4 GeV for mass(t) = 172.5 GeV.


pdgid: Q007W
text:
Based on 955 pb**-1 of p pbar collision data at sqrt(s) = 1.96 TeV. AALTONEN 2009M selected  t tbar candidate events for the lepton + notET + jets channel with one or two b-tags, and  examine the decay width dependence of the reconstructed mass(t) distribution. The result is for mass(t) =175 GeV, whereas the upper limit is lower for smaller mass(t).


pdgid: Q007R6
text:
Based on 8.7 fb**-1 of data. This measurement gives |V_tb| = 0.93+-0.04 and |V_tb| > 0.85 (95% CL) in the SM.


pdgid: Q007R6
text:
Based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The result is obtained by counting the number of b jets per t tbar signal events in the dilepton channel.  The t tbar production cross section is measured to be CS(t tbar) =  238+-1+-15 pb, in good agreement with the SM prediction and the latest CMS measurement of CHATRCHYAN 2014F.  The measurement gives R > 0.995 (95%  CL), or |V_tb| > 0.975  (95% CL) in the SM, requiring  R<=1.


pdgid: Q007R6
text:
Based on 8.7 fb**-1 of p pbar collisions at sqrt(s) = 1.96 TeV. Measure the fraction of t --> W b decays simultaneously with the t tbar cross section. The correlation coefficient between those two measurements is -0.434. Assume unitarity of the 3x3 CKM matrix and set |V_tb| > 0.89 at 95% CL.


pdgid: Q007R6
text:
Based on 5.4 fb**-1 of data. The error is statistical and systematic combined. The result is a combination of 0.95+-0.07 from lepton + jets channel and 0.86+-0.05 from lepton lepton channel. |V**tb| = 0.95+-0.02 follows from the result by assuming unitarity of the 3x3 CKM matrix.


pdgid: Q007R6
text:
Result is based on 0.9 fb**-1 of data. The 95% CL lower bound R > 0.79 gives  |V_tb| > 0.89 (95% CL).


pdgid: Q007R6
text:
ABAZOV 2006K result is from the analysis of t tbar --> lepton nu +>=3 jets with 230 pb**-1 of data at sqrt(s) = 1.96 TeV. It gives R > 0.61 and |V_tb|>0.78 at 95% CL. Superseded by ABAZOV 2008M.


pdgid: Q007R6
text:
ACOSTA 2005A result is from the analysis of lepton + jets and di-lepton + jets final states of t tbar candidate events with ~162 pb**-1 of data at sqrt(s) = 1.96 TeV. The first error is statistical and the second systematic. It gives R > 0.61, or |V_tb| > 0.78 at 95% CL.


pdgid: Q007R6
text:
AFFOLDER 2001C measures the top-quark decay width ratio R= Gamma(W b)/Gamma(W q), where q is a d, s, or b quark, by using the number of events with multiple btags. The first error is statistical and the second systematic.  A numerical integration of the likelihood function gives R>0.61 (0.56) at 90% (95%) CL. By assuming three generation unitarity, |V(t b)|= 0.97+0.16-0.12 or |V(t b)| >0.78 (0.75) at 90% (95%) CL is obtained.  The result is based on 109pb**-1 of data at sqrt(s)= 1.8 TeV.


pdgid: Q007R9
text:
AAD 2015CC based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. The original value is  given by 13.3+-0.4+-0.5%, which includes electrons from the decay of tau leptons.  It is assumed that the top branching ratios to leptons and jets add up to one and that only SM  processes contribute to the background. The event selection criteria are optimized for the  lepton tau_h + jets channel. We have converted the original value to eliminate contributions of  electrons from tau's, by using the AAD 2015CC measurements of the branching ratios to  mu and tau channels, as well as the PDG values of tau branching ratios into e and  mu channels.


pdgid: Q007R10
text:
AAD 2015CC based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. The original value is  given by 13.4+-0.3+-0.5%, which includes muons from the decay of tau leptons. It is  assumed that the top branching ratios to leptons and jets add up to one and that only SM processes  contribute to the background. The event selection criteria are optimized for the lepton tau_h +  jets channel. We have converted the original value to eliminate contributions of muons from  tau's, by using the AAD 2015CC measurements of the branching ratios to mu and tau  channels, as well as the PDG values of tau branching ratios into e and tau channels.


pdgid: Q007R4
text:
SIRUNYAN 2020V based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. t tbar  events are selected in the t tbar --> (lepton nu_lepton) (tau_h nu_tau) b bbar mode, where  tau_{{h}} refers to the hadronic decays of tau. The branching ratio is determined with respect  to the t tbar inclusive cross section extrapolated from the light dilepton mode. The ratio of  the t tbar production cross sections in the lepton tau_h and lepton lepton channels  yields 0.973+-0.009+-0.066, consistent with lepton universality.


pdgid: Q007R4
text:
AAD 2015CC based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. The original value is  given by 7.0+-0.3+-0.5%, which includes only the hadronic decay of tau leptons. It  is assumed that the top branching ratios to leptons and jets add up to one and that only SM  processes contribute to the background. The event selection criteria are optimized for the  lepton tau_h + jets channel. We have converted the original value to include leptonic decays of  tau's, by using the AAD 2015CC measurements of the branching ratios to e and mu  channels, as well as the PDG values of tau branching ratios into e and mu channels.


pdgid: Q007R4
text:
Based on 9 fb**-1 of data. The measurement is in the channel t tbar --> ( b lepton nu ) ( b tau nu ), where tau decays into hadrons (tau_{{h}}), and lepton (e or mu) include  lepton  from tau decays (tau_{{{{mathit ell}}}}). The result is consistent with lepton universality.


pdgid: Q007R4
text:
ABULENCIA 2006R looked for t tbar --> (lepton nu_lepton) (tau nu_tau) b bbar events in 194 pb**-1 of p pbar collisions at sqrt(s) = 1.96 TeV. 2 events are found where 1.00+-0.17 signal and 1.29+-0.25 background events are expected, giving a 95% CL upper bound for the partial width ratio Gamma(t --> tau nu q) / Gamma(SM)(t --> tau nu q) < 5.2.


pdgid: Q007R4
text:
ABE 1997V searched for t tbar --> (lepton nu_lepton) (tau nu_tau) b bbar events in 109pb**-1 of p pbar collisions at sqrt(s) = 1.8 TeV.  They observed 4candidate events where one expects ~1 signal and ~2 background events.  Three of the four observed events have jets identified as bcandidates.


pdgid: Q007R11
text:
AAD 2015CC based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. Branching ratio of  top quark into  b  and jets.  It is assumed that the top branching ratios to leptons and jets  add up to one and  that  only SM processes contribute to the background. The event selection  criteria are optimized for the lepton tau_h + jets channel.


pdgid: Q007R3
text:
HAYRAPETYAN 2024L based on 138 fb**-1 of data in p p collisions at sqrt(s) = 13 TeV.  FCNC through single top production in association with a photon, and t tbar production with a  top quark decaying into a photon and up-quark, are searched for. Bounds on the anomalous FCNC  coupling is given by kappa(t u gamma)< 6.2E-3.


pdgid: Q007R3
text:
HAYRAPETYAN 2024L based on 138 fb**-1 of data in p p collisions at sqrt(s) = 13 TeV.  FCNC through single top production in association with a photon, and t tbar production with a  top quark decaying into a photon and charm-quark, are searched for. Bounds on the anomalous FCNC  coupling is given by kappa(t c gamma)< 7.7E-3.


pdgid: Q007R3
text:
AAD 2023 based on 139 fb**-1 of data in p p collisions at sqrt(s) = 13 TeV.    Anomalous FCNC left-handed and right-handed couplings are searched for through the single top    production in association with a photon and  in  the decay of a top quark in the t tbar    production. The SM predictions of the corresponding  branching ratios are of the order of    E-14.


pdgid: Q007R3
text:
CHEKANOV 2003 looked for single top production via FCNC in the reaction e+- p --> e+- (t or tbar) X in 130.1 pb**-1 of data at sqrt(s)=300 -- 318 GeV. No evidence for top production and its decay into b W was found.  The result is obtained for mass(t)=175 GeV when B(gamma c)=B(Z q)=0, where q is a u or c quark. Bounds on the effective t-u-gamma and t-u-Z couplings are found in their Fig.4. The conversion to the constraint listed is from private communication, E. Gallo, January 2004.


pdgid: Q007R3
text:
AAD 2020B based on 81 fb**-1 of data in p p collisions at sqrt(s) = 13 TeV. FCNC  through single top production in association with a photon is searched for in the mode lepton gamma +  notET + 1j (b-tag). Anomalous FCNC left-handed and right-handed couplings are  searched for, which result in different kinematical properties of top decay such as the lepton  distribution. Limits are set on the t q gamma couplings in an effective field theory.


pdgid: Q007R3
text:
KHACHATRYAN 2016AS based on 19.8 fb**-1 of data in p p collisions at sqrt(s) = 8  TeV. FCNC through single top production in association with a photon is searched for in the mode  mu + gamma + notET + >=1j (0,1b). Bounds on the anomalous FCNC couplings  are given by kappa(t u gamma)< 0.025 and kappa(t c gamma)< 0.091.


pdgid: Q007R3
text:
AARON 2009A looked for single top production via FCNC in e+- p collisions at HERA with 474 pb**-1. The upper bound of the cross section gives the bound on the FCNC coupling kappa(t u gamma)/Lambda  < 1.03 TeV**-1, which corresponds to the result for mass(t) = 175 GeV.


pdgid: Q007R3
text:
ABDALLAH 2004C looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 541 pb**-1 of data at sqrt(s)=189 -- 208~GeV. No deviation from the SM is found, which leads to the bound on B(t --> gamma q), where q is a u or a c quark, for mass(t) = 175~GeV when B(t --> Z q)=0 is assumed. The conversion to the listed bound is from private communication, O. Yushchenko, April 2005. The bounds on the effective t-q-gamma and t-q-Z couplings are given in their Fig.~7 and Table~4, for mass(t) = 170 -- 180~GeV, where most conservative bounds are found by choosing the chiral couplings to maximize the negative interference between the virtual gamma and Z exchange amplitudes.


pdgid: Q007R3
text:
AKTAS 2004 looked for single top production via FCNC in e+- collisions at HERA with 118.3 pb**-1, and found 5 events in the e or mu channels. By assuming that they are due to statistical fluctuation, the upper bound on the t u gamma coupling kappa(t u gamma) < 0.27 (95% CL) is obtained. The conversion to the partial width limit, when B(gamma c) = B(Z u) = B(Z c) = 0, is from private communication, E. Perez, May 2005.


pdgid: Q007R3
text:
ACHARD 2002J looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 634 pb**-1 of data at sqrt(s)= 189 -- 209 GeV. No deviation from the SM is found, which leads to a bound on the top-quark decay branching fraction B(gamma q), where q is a u or c quark. The bound assumes B(Z q)=0 and is for mass(t)= 175 GeV;  bounds for mass(t)=170 GeV and 180 GeV and B(Z q)not=0 are given in Fig.5 and Table7.


pdgid: Q007R3
text:
ABE 1998G looked for t tbar events where one t decays into q gamma while the other decays into b W. The quoted bound is for Gamma(gamma q)/Gamma(W b).


pdgid: Q007R02
text:
AABOUD 2018BW based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. In the mass  range of mass(H+) = 90 -- 160 GeV, assuming the SM cross section for the t tbar  production, the upper limit for the branching fraction B(t --> b H+) x B(H+ --> tau nu_tau)  ranges between 0.25% and 0.031%.


pdgid: Q007R20
text:
AAD 2024BN based on 140 fb**-1 of p p data at sqrt(s) = 13 TeV. Long-lived axionlike  particles which decay hadronically are searched for in the decay of the top quark. The upper limit  on the branching ratio is obtained between 1.6 < ctau(a) < 130 mm and for  40 < mass(a) < 55 GeV.


pdgid: Q007R2
text:
AAD 2023AS based on 139 fb**-1 of data in p p collisions at sqrt(s) = 13 TeV.  Anomalous FCNC left-handed and right-handed couplings are searched for through the single top  production in association with a Z boson and in the decay of a top quark in the t tbar  production. Events with 3lepton + >=1 jet(s) (1b-tagged) + notET are used. The  SM predictions of the corresponding branching ratios are of the order of E-14.


pdgid: Q007R2
text:
SIRUNYAN 2017E based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The final states  t tbar --> lepton+ lepton- lepton^'()+- nu + jets (lepton, lepton^' = e, mu)  are investigated and the cross section sigma(p p --> t Z q --> lepton nu b lepton+ lepton- q) =  10+8-7fb is measured, giving no sign of FCNC decays of the top quark.


pdgid: Q007R2
text:
AAD 2016D based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. The FCNC decay is  searched for in t tbar events in the final state (b W)(q Z) when both W and Z  decay leptonically, giving 3 charged leptons.


pdgid: Q007R2
text:
Based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. The final states t tbar --> lepton+ lepton- lepton^'()+- nu +  jets (lepton, lepton^' = e, mu) are investigated and no significant excess over the  SM background contributions is observed.


pdgid: Q007R2
text:
Based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The flavor changing decay is searched for in t tbar events in the final state (b W)(q Z) when both W and Z decay leptoically, giving 3 charged leptons.


pdgid: Q007R2
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. Search for FCNC decays of the top quark in  t tbar --> lepton+ lepton- lepton^'()+- nu + jets (lepton, lepton^' = e, mu) final states found no excess of signal events.


pdgid: Q007R2
text:
Based on 4.1 fb**-1 of data. ABAZOV 2011M searched for FCNC decays of the top quark in t tbar --> lepton+ lepton- lepton^'()+- nu + jets (lepton, lepton^'() = e, mu) final states, and absence of the signal gives the bound.


pdgid: Q007R2
text:
Based on p pbar data of 1.52 fb**-1. AALTONEN 2009AL compared t tbar --> W b W b --> lepton nu b j j b and t tbar --> Z c W b --> lepton lepton c j j b decay chains, and absence of the latter signal gives the bound. The result is for 100% longitudinally polarized Z boson and the theoretical t tbar production cross section The results for different Z polarizations and those without the cross section assumption are given in their Table XII.


pdgid: Q007R2
text:
Result is based on 1.9 fb**-1 of data at sqrt(s) = 1.96 TeV. t tbar --> W b Z q or Z q Z q processes have been looked for in Z + >=4 jet events with and without b-tag. No signal leads to the  bound B(t --> Z q) < 0.037 (0.041) for mass(t) = 175 (170) GeV.


pdgid: Q007R2
text:
ABDALLAH 2004C looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 541 pb**-1 of data at sqrt(s)=189 -- 208~GeV. No deviation from the SM is found, which leads to the bound on B(t --> Z q), where q is a u or a c quark, for mass(t) = 175~GeV when B(t --> gamma q)=0 is assumed. The conversion to the listed bound is from private communication, O. Yushchenko, April 2005. The bounds on the effective t-q-gamma and t-q-Z couplings are given in their Fig.~7 and Table~4, for mass(t) = 170 -- 180~GeV, where most conservative bounds are found by choosing the chiral couplings to maximize the negative interference between the virtual gamma and Z exchange amplitudes.


pdgid: Q007R2
text:
ACHARD 2002J looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 634 pb**-1 of data at sqrt(s)= 189 -- 209 GeV. No deviation from the SM is found, which leads to a bound on the top-quark decay branching fraction B(Z q), where q is a u or c quark. The bound assumes B(gamma q)=0 and is for  mass(t)= 175 GeV;  bounds for mass(t)=170 GeV and 180 GeV and B(gamma q) notequal0 are given in Fig.5 and Table7.  Table6 gives constraints on t-c-e-e four-fermi contact interactions.


pdgid: Q007R2
text:
HEISTER 2002Q looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 214 pb**-1 of data at sqrt(s)= 204 -- 209 GeV. No deviation from the SM is found, which leads to a bound on the branching fraction B(Z q), where q is a u or c quark. The bound assumes B(gamma q)=0 and is for mass(t)= 174 GeV. Bounds on the effective t- (c or u)- gamma and t- (c or u)- Z couplings are given in their Fig.2.


pdgid: Q007R2
text:
ABBIENDI 2001T looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 600pb**-1 of data at sqrt(s)= 189 -- 209 GeV.  No deviation from the SM is found, which leads to  bounds on the branching fractions B(Z q) and B(gamma q), where q is a u or c quark.  The result is obtained for mass(t)= 174 GeV.  The upper bound becomes 9.7% (20.6%) for mass(t)= 169 (179) GeV. Bounds on the effective t- (c or u)-gamma and t- (c or u)-Z couplings are given in their Fig.4.


pdgid: Q007R2
text:
BARATE 2000S looked for single top production via FCNC in the reaction e+ e- --> tbar c or tbar u in 411pb**-1 of data at c.m. energies between 189 and 202 GeV.  No deviation from the SM is found, which leads to a  bound on the branching fraction.  The bound assumes B(gamma q)=0. Bounds on the effective t- (c or u)-gamma and t- (c or u)-Z couplings are given in their Fig.4.


pdgid: Q007R2
text:
ABE 1998G looked for t tbar events where one t decays into three jets and the other decays into q Z with Z --> lepton lepton. The quoted bound is for Gamma(Z q)/Gamma(W b).


pdgid: Q007R00
text:
TUMASYAN 2022A based on 137 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H u in t tbar production using H --> gamma gamma.


pdgid: Q007R00
text:
AAD 2024AU based on 140 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H u in t tbar production using three Higgs decay modes.


pdgid: Q007R00
text:
AAD 2024AU based on 140 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H u in t tbar production using five Higgs decay modes.


pdgid: Q007R00
text:
AAD 2023CJ based on 139 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H u in t tbar production using H --> gamma gamma. Limits on the SMEFT  Wilson coefficients are derived.


pdgid: Q007R00
text:
AAD 2023CJ based on 139 fb**-1 at sqrt(s) = 13 TeV of p p data. The results are  combined with searches in the H --> gamma gamma, H --> b b, and H --> tau tau final  states.  Limits on the SMEFT Wilson coefficients are also derived.


pdgid: Q007R00
text:
AAD 2023H based on 139 fb**-1 at sqrt(s) = 13 TeV of p p data. The limits are set  using events with two hadronically decaying tau in the lepton + multiple jets.


pdgid: Q007R00
text:
TUMASYAN 2022K based on 137 fb**-1 at sqrt(s) = 13 TeV of p p data. Uses events with  one isolated lepton and multiple jets (including >= 2b-jets). Deep neural networks are  used for kinematical event reconstruction.


pdgid: Q007R00
text:
AABOUD 2019S based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. Uses events with  one isolated lepton and multiple jets (several of them b-tagged with high purity).  A multivariate analysis is performed to distinguish the signal from backgrounds.


pdgid: Q007R00
text:
AABOUD 2019S based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. Uses events with  one or two hadronically decaying tau and multiple jets. A multivariate analysis is performed to  distinguish the signal from backgrounds.


pdgid: Q007R00
text:
AABOUD 2019S based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. The searches  using H --> b b and H --> tau_h tau_h  are combined with searches in diphoton and  multilepton final states. The upper limit on the Yukawa coupling |Y_{{tuH}}| < 0.066  (95% CL) is obtained.


pdgid: Q007R00
text:
AABOUD 2018X based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. lepton lepton(same  sign) +>=4j mode and lepton lepton lepton +>=2j mode are targeted and specialized  boosted decision trees are used to distinguish signals from backgrounds.


pdgid: Q007R00
text:
SIRUNYAN 2018BC based on 35.9 fb**-1 at sqrt(s) = 13 TeV of p p data. Two channels  p p --> t H and p p --> t tbar in final states with one isolated lepton and >=3 jets  with >=2 b jets are considered assuming a single t H u FCNC coupling. Reconstructed  kinematical variables are fed into a multivariate analysis and no significant deviation is observed  from the predicted background.


pdgid: Q007R00
text:
AABOUD 2017AV based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. Search for t tbar events, where the other top quark decays hadronically or semi-leptonically.


pdgid: Q007R00
text:
KHACHATRYAN 2017I based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV, using the  topologies t tbar --> H q+W b, where q=u, c.


pdgid: Q007R00
text:
AAD 2015CO based on 20.3 fb**-1 at sqrt(s) = 8 TeV of p p data. Searches for t tbar  events, where the other top quark decays semi-leptonically. Exploits high multiplicity of  b-jets and uses a likelihood discriminant. Combining with other ATLAS searches for different  Higgs decay modes, B(t --> H c) < 0.46% and B(t --> H u) <  0.45% are obtained.


pdgid: Q007R00
text:
AAD 2014AA based on 4.7 fb**-1 at sqrt(s) = 7 TeV and 20.3 fb**-1 at sqrt(s) = 8  TeV of p p data.   The upper-bound is for the sum of Br(t --> H c) and Br(t --> H u).  Search for t tbar   events, where the other top quark decays hadronically or semi-leptonically.  The upper bound   constrains the H-t-c Yukawa couplings sqrt( | Y(t c_L)**H |**2 + | Y(t c_R)**H |**2 ) < 0.17 (95% CL).


pdgid: Q007R01
text:
AAD 2024AU based on 140 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H c in t tbar production using five Higgs decay modes.


pdgid: Q007R01
text:
AAD 2024AU based on 140 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H c in t tbar production using three Higgs decay modes.


pdgid: Q007R01
text:
AAD 2023CJ based on 139 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H c in t tbar production using H --> gamma gamma. Limits on the SMEFT  Wilson coefficients are derived.


pdgid: Q007R01
text:
AAD 2023H based on 139 fb**-1 at sqrt(s) = 13 TeV of p p data. Uses events with one   or two hadronically decaying tau and multiple jets. The limit corresponds to 4.8+2.2-1.4E-4  measurement.


pdgid: Q007R01
text:
TUMASYAN 2022A based on 137 fb**-1 at sqrt(s) = 13 TeV of p p data. The processes  considered include both the associated production of a single top quark with a Higgs boson and the  decay t --> H c in t tbar production using H --> gamma gamma.


pdgid: Q007R01
text:
AABOUD 2019S based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. The searches  using H --> b b and H --> tau_h tau_h  are combined with searches in diphoton and  multilepton final states. The upper limit on the Yukawa coupling |Y_{{tcH}}| < 0.064  (95% CL) is obtained.


pdgid: Q007R01
text:
AABOUD 2019S based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. Uses events with  one isolated lepton and multiple jets (several of them b-tagged with high purity). A  multivariate analysis is performed to distinguish the signal from backgrounds.


pdgid: Q007R01
text:
SIRUNYAN 2018BC based on 35.9 fb**-1 at sqrt(s) = 13 TeV of p p data. Two channels  p p --> t H and p p --> t tbar in final states with one isolated lepton and >=3 jets  with >=2 b jets are considered assuming a single t H c FCNC coupling. Reconstructed  kinematical variables are fed into a multivariate analysis and no significant deviation is observed  from the predicted background.


pdgid: Q007R01
text:
AABOUD 2017AV based on 36.1 fb**-1 at sqrt(s) = 13 TeV of p p data. Search for t tbar events, where the other top quark decays hadronically or semi-leptonically. The upper bound on the H-t-c Yukawa couplings is 0.090 (95% CL).


pdgid: Q007R01
text:
Based on 19.5 fb**-1 of p p data at sqrt(s) = 8 TeV. Search for final states with 3 or more isolated high E(T) charged leptons (lepton = e, mu) bounds the t --> H c decay in t tbar events when H decays contain a pair of leptons. The upper bound constrains  the H-t-c Yukawa couplings sqrt( | Y(t c_L)**H |**2 + | Y(t c_R)**H |**2 ) < 0.21 (95% CL).


pdgid: Q007R01
text:
KHACHATRYAN 2014Q based on 19.5 fb**-1 at sqrt(s) = 8 TeV of p p data. Search for  final states with >=3 isolated charged leptons or with a photon pair accompanied by >=1  lepton(s).


pdgid: Q007R8
text:
Based on 19.5 fb**-1 of p p data at sqrt(s) = 8 TeV. Baryon number violating decays of the top quark are searched for in t tbar production events where one of the pair decays into hadronic three jets.


pdgid: Q007R03
text:
TUMASYAN 2022Z analysis includes both the production (c --> e mu t) and decay (t --> e mu c)  modes of  the top quark through CLFV interactions. With no significant excess over the standard  model  expectation, the limits are set at 95% CL on the B(t --> e mu c) of 1.31E-6,  0.89E-6, 2.59E-6 for vector-, scalar-, and tensor-like CLFV four-fermion effective  interactions, respectively.


pdgid: Q007R04
text:
TUMASYAN 2022Z analysis includes both the production (u --> e mu t) and decay (t --> e mu u)  modes of  the top quark through CLFV interactions. With no significant excess over the standard  model  expectation, the limits are set at 95% CL on the B(t --> e mu u) of 0.13E-6,  0.07E-6, 0.25E-6 for vector-, scalar-, and tensor-like CLFV four-fermion effective  interactions, respectively.


pdgid: Q007R05
text:
AAD 2024W analysis includes both the production (q --> mu tau t) and decay (t --> mu tau q)  modes of the top quark through CLFV interactions, where q = u, c. With no significant  excess over the standard model expectation, upper limits are set on Wilson coefficients of SMEFT as  well as leptoquark coupling strengths for various leptoquark masses.


pdgid: Q007R06
text:
HAYRAPETYAN 2024E based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. A search is  performed for a baryon-number-violating interactions in top quark production and decay, using  events with lepton+- lepton-+ + 1b-jet. Upper limits are placed on the couplings of the 24  baryon-number-violating dimension-six operators involving the top quark, setting only one of them  as non-zero each time. They are translated to limits on the branching fractions of the top quark.


pdgid: Q007TV0
text:
AAD 2020Y based on about 20 fb**-1 of p p data at sqrt(s) = 8 TeV for each  experiment. The first error stands for the sum of the statistical and background uncertainties, and  the second error for the remaining systematic uncertainties. The measurements used events with one  lepton and different jet multiplicities in the final state. The result is consistent with the NNLO  SM prediction of 0.687+-0.005 for mass(t) = 172.8+-1.3 GeV.


pdgid: Q007TV0
text:
Based on 8.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV using t tbar events  with lepton + notET + >=4 jets(>=1 b), and under the constraint F(0) +  F(+) + F(-) = 1. The statstical errors of F(0) and F(+) are correlated with correlation coefficient rho(F(0),F(+)) = -0.69.


pdgid: Q007TV0
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2013BH studied  events with large notET and lepton +>=4 jets using a constrained kinematic fit.


pdgid: Q007TV0
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. AAD 2012BG studied  events with large notET and either lepton +>=4j or leptonlepton +>=2j.  The uncertainties are not independent, rho(F_{{0}}(),F_{{-}}()) = -0.96.


pdgid: Q007TV0
text:
Based on 2.7 and 5.1 fb**-1 of CDF data in lepton + jets and dilepton channels, and 5.4 fb**-1 of D0 data  in lepton + jets and dilepton channels.  F_{{0}}() = 0.682+-0.035+-0.046 if F_{{+}}() = 0.0017(1), while F_{{+}}() = -0.015+-0.018+-0.030 if F_{{0}}() = 0.688(4), where the assumed fixed values are the SM prediction for mass(t) = 173.3+-1.1 GeV and mass(W) = 80.399+-0.023 GeV.


pdgid: Q007TV0
text:
Results are based on 5.4 fb**-1 of data in p pbar collisions at 1.96 TeV, including those of ABAZOV 2008B. Under the SM constraint of f_{{0}}() = 0.698 (for mass(t) = 173.3 GeV,  mass(W) = 80.399 GeV), f_{{+}}() = 0.010+-0.022+-0.030 is obtained.


pdgid: Q007TV0
text:
AFFOLDER 2000B studied the angular distribution of leptonic decays of W bosons in t --> W b events.  The ratio F(0) is the fraction of the helicity zero (longitudinal) Wbosons in the decaying top quark rest frame. B(t --> W_+ b) is the fraction of positive helicity (right-handed) positive charge Wbosons in the top quark decays.  It is obtained by assuming the Standard Model value of F(0).


pdgid: Q007TV0
text:
AABOUD 2017BB based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV.  Triple-differential decay rate of top quark in the t-channel single-top production is used to  simultaneously determine five generalized W t b couplings as well as the top polarization. No  assumption is made for the other couplings. See this paper for constraints on other couplings not  included here. The paper reported f_{{1}}, and we converted it to F_{{0}}().


pdgid: Q007TV0
text:
KHACHATRYAN 2016BU based on 19.8 fb**-1 of p p data at sqrt(s) = 8 TeV using t tbar events  with lepton + notET + >=4 jets(>=2 b). The errors of F_{{0}}() and  F_{{-}}() are correlated with a correlation coefficient rho(F_{{0}}(), F_{{-}}()) =  -0.87. The result is consistent with the NNLO SM prediction of 0.687+-0.005 for mass(t) =  172.8+-1.3 GeV.


pdgid: Q007TV0
text:
Results are based on 2.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. F_{{0}}() result is obtained by assuming F_{{+}}() = 0, while F_{{+}}() result is obtained for F_{{0}}() = 0.70, the SM value. Model independent fits for the two fractions give F_{{0}}() = 0.88+-0.11+-0.06 and F_{{+}}() = -0.15+-0.07+-0.06 with correlation coefficient of -0.59. The results are for mass(t) = 175 GeV.


pdgid: Q007TV0
text:
Results are based on 1.9 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. F_{{0}}() result is obtained assuming F_{{+}}() = 0, while F_{{+}}() result is obtained for F_{{0}}() = 0.70, the SM values. Model independent fits for the two fractions give F_{{0}}() = 0.66+-0.16+-0.05 and F_{{+}}() = -0.03+-0.06+-0.03.


pdgid: Q007TV0
text:
Based on 200 pb**-1 of data at sqrt(s) = 1.96 TeV. t --> W b --> lepton nu b (lepton = e or mu). The errors are stat + syst.


pdgid: Q007TV0
text:
ABAZOV 2005G studied the angular distribution of leptonic decays of W bosons in t tbar candidate events with lepton + jets final states, and obtained the fraction of longitudinally polarized W under the constraint of no right-handed current, F_{{+}}() = 0. Based on 125 pb**-1 of data at sqrt(s) = 1.8 TeV.


pdgid: Q007TVN
text:
AAD 2020Y based on about 20 fb**-1 of p p data at sqrt(s) = 8 TeV for each  experiment. The first error stands for the sum of the statistical and background uncertainties, and  the second error for the remaining systematic uncertainties. The measurements used events with one  lepton and different jet multiplicities in the final state. The result is consistent with the NNLO  SM prediction of 0.311+-0.005 for mass(t) = 172.8+-1.3 GeV.


pdgid: Q007TVN
text:
AABOUD 2017BB based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV.  Triple-differential decay rate of top quark in the t-channel single-top production is used to  simultaneously determine five generalized W t b couplings as well as the top polarization. No  assumption is made for the other couplings. The authors reported f_{{1}} = 0.30+-0.05 and  f_{{1}}^+() < 0.120 which we converted to F_{{-}}() = f_{{1}}(1 - f_{{1}}^+()).  See this paper for constraints on other couplings not included here.


pdgid: Q007TVN
text:
KHACHATRYAN 2016BU based on 19.8 fb**-1 of p p data at sqrt(s) = 8 TeV using t tbar events  with lepton + notET + >=4 jets(>=2 b). The errors of F_{{0}}() and  F_{{-}}() are correlated with a correlation coefficient rho(F_{{0}}(), F_{{-}}()) =  -0.87. The result is consistent with the NNLO SM prediction of 0.311+-0.005 for mass(t) =  172.8+-1.3 GeV.


pdgid: Q007TVP
text:
AAD 2020Y based on about 20 fb**-1 of p p data at sqrt(s) = 8 TeV for each  experiment. The first error stands for the sum of the statistical and background uncertainties, and  the second error for the remaining systematic uncertainties. The measurements used events with one  lepton and different jet multiplicities in the final state. The result is estimated from the  measurements of F(0) and F(-) assuming unitarity. The value is consistent  with the NNLO SM prediction of 0.0017+-0.0001 for mass(t) = 172.8+-1.3 GeV.


pdgid: Q007TVP
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. AAD 2012BG studied  events with large notET and either lepton +>=4j or leptonlepton +>=2j.


pdgid: Q007TVP
text:
AABOUD 2017BB based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV.  Triple-differential decay rate of top quark in the t-channel single-top production is used to  simultaneously determine five generalized W t b couplings as well as the top polarization. No  assumption is made for the other couplings. The authors reported f_{{1}} = 0.30+-0.05 and  f_{{1}}^+() < 0.120 which we converted to F_{{+}}() = f_{{1}} f_{{1}}^+(). See this paper  for constraints on other couplings not included here.


pdgid: Q007TVP
text:
KHACHATRYAN 2016BU based on 19.8 fb**-1 of p p data at sqrt(s) = 8 TeV using t tbar events  with lepton + notET + >=4 jets(>=2 b). The result is consistent with the  NNLO SM prediction of 0.0017+-0.0001 for mass(t) = 172.8+-1.3 GeV.


pdgid: Q007TVP
text:
Based on 370 pb**-1 of data at sqrt(s) = 1.96 TeV, using the lepton + jets and dilepton decay channels. The result assumes F_{{0}}() = 0.70, and it gives F_{{+}}() < 0.23 at 95% CL.


pdgid: Q007TVP
text:
ABAZOV 2005L studied the angular distribution of leptonic decays of W bosons in t tbar events, where one of the W's from t or tbar decays into e or mu and the other decays hadronically.  The fraction of the ``+'' helicity W boson is obtained by assuming F_{{0}}() = 0.7, which is the generic prediction for any linear combination of V and A currents. Based on 230+-15 pb**-1 of data at sqrt(s) = 1.96 TeV.


pdgid: Q007TVP
text:
ACOSTA 2005D measures the mass**2(lepton + b) distribution in t tbar production events where one or both W's decay leptonically to lepton = e or mu, and finds a bound on the V+A coupling of the t b W vertex.  By assuming the SM value of the longitudinal W fraction F_{{0}}() = B(t --> W_0() b) = 0.70, the bound on F(+) is obtained. If the results are combined with those of AFFOLDER 2000B, the bounds become F(V+A) < 0.61 (95% CL) and F_{{+}}() < 0.18 (95 %CL), respectively.  Based on 109+-7 pb**-1 of data at sqrt(s) = 1.8 TeV (run I).


pdgid: Q007TV4
text:
AAD 2020Y based on about 20 fb**-1 of p p data at sqrt(s) = 8 TeV for each  experiment. The measurements used events with one lepton and different jet multiplicities in the  final state. The measurements of F(0) and F(-) are used to set the limit.  The limit is obtained by assuming the other couplings to have their SM values.


pdgid: Q007TV4
text:
AABOUD 2017BB based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV.  Triple-differential decay rate of top quark is used to simultaneously determine five generalized  W t b couplings as well as the top polarization. No assumption is made for the other couplings.  See this paper for constraints on other couplings not included here.


pdgid: Q007TV4
text:
KHACHATRYAN 2017G based on 5.0 and 19.7 fb**-1 of p p data at sqrt(s) = 7 and 8 TeV,  respectively. A Bayesian neural network technique is used to discriminate between signal and  backgrounds. This is a 95% CL exclusion limit obtained by a three-dimensional fit with  simultaneous variation of (f(1)**L, f(1)**R, f(2)**R).


pdgid: Q007TV4
text:
Based on 5.4 fb**-1 of data. For each value of the form factor quoted the other two are assumed to have their SM value. Their Fig. 4 shows two-dimensional posterior probability density distributions for the anomalous couplings.


pdgid: Q007TV4
text:
Based on 5.4 fb**-1 of data in p pbar collisions at 1.96 TeV. Results are obtained by combining the limits from the W helicity measurements and those from the single top quark production.


pdgid: Q007TV4
text:
Based on 1 fb**-1 of data at p pbar collisions sqrt(s) = 1.96 TeV. Combined result of the W  helicity measurement in t tbar events (ABAZOV 2008B) and the search for anomalous t b W  couplings in the single top production (ABAZOV 2008AI). Constraints when f(1)**L and one  of the anomalous couplings are simultaneously allowed to vary are given in their Fig. 1 and Table 1.


pdgid: Q007TV4
text:
Result is based on 0.9 fb**-1 of data at sqrt(s) = 1.96 TeV. Single top quark production events are used to measure the Lorentz structure of the t b W coupling. The upper bounds on the non-standard couplings are obtained when only one non-standard coupling  is allowed to be present together with the SM one, f(1)**L = V(t b)***.


pdgid: Q007TV5
text:
KHACHATRYAN 2017G based on 5.0 and 19.7 fb**-1 of p p data at sqrt(s) = 7 and 8 TeV,  respectively. A Bayesian neural network technique is used to discriminate between signal and  backgrounds. This is a 95% CL exclusion limit obtained by a three-dimensional fit with  simultaneous variation of (f(1)**L, f(2)**L, f(2)**R).


pdgid: Q007TV6
text:
AABOUD 2017I based on 20.2 fb**-1 of p p data at sqrt(s) = 8 TeV. A cut-based  analysis is used to discriminate between signal and backgrounds. All anomalous couplings other than  Im(f)(2)**R are assumed to be zero. See this paper for a number of other asymmetries and  measurements that are not included here.


pdgid: Q007TV6
text:
AAD 2016AK based on 4.6 fb**-1 of p p data at sqrt(s) = 7 TeV. The results are  obtained from an analysis of angular distributions of the decay products of single top quarks,  assuming f(1)**R=f(2)**L=0. The fraction of decays containing transversely  polarized W is measured to be   F(+) +  F(-) = 0.37+-0.07.


pdgid: Q007A02
text:
AAD 2024AL based on 140 fb**-1 of data at sqrt(s) = 13 TeV. The value is extracted by  dividing the measured value CS(t q + tbar q) = 221+-13 pb by the SM expectation of  214+-3.4(scale+PDF)+-1.8(Deltam(top)) pb in the t-channel single-top production  mode. Restricting 0 < |V_tb| < 1 and setting f(LV) = 1, a lower limit  |V_tb| > 0.95 (95% CL) is obtained within the SM.


pdgid: Q007A02
text:
AAD 2024BS based on 140 fb**-1 of data at sqrt(s) = 13 TeV. The value is extracted by  comparing the measured cross section for a single top quark in association with a W boson with  the SM prediction.


pdgid: Q007A02
text:
AAD 2024M based on 255 pb**-1 of data at sqrt(s) = 5.02 TeV. The value is extracted from  the cross section of the t-channel single-top production CS(t q + tbar q) =  27.1+4.4-4.1+4.4-3.7 pb.


pdgid: Q007A02
text:
SIRUNYAN 2020AZ based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. Final states  enriched in single top quark t-channel events are used. Several theories beyond the standard  model are considered, and by releasing all constraints among the involved parameters. Under the  standard model assumption of CKM unitarity, the values are found to be |V(tb)| >  0.970 and |V(td)|**2 + |V(ts)|**2 < 0.057, both at 95% CL.


pdgid: Q007A02
text:
The combination of single-top production cross-section measurements in the t-channel, t W,  and s-channel production modes from ATLAS and CMS at sqrt(s) = 7 and 8 TeV.


pdgid: Q007A05
text:
We report the square root of SIRUNYAN 2020AZ result based on 35.9 fb**-1 of p p data  at sqrt(s) = 13 TeV measured |V(td)|**2 + |V(ts)|**2 = 0.06+-0.06 using final  states enriched in single top quark t-channel events by releasing all constraints from  unitarity of the CKM matrix within the SM. Under the standard model assumption of CKM unitarity,the  values are found to be |V(tb)| > 0.970 and |V(td)|**2 + |V(ts)|**2  < 0.057, both at 95% CL.


pdgid: Q007CMD
text:
SIRUNYAN 2020AM based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. t tbar  with low and high boosts are reconstructed through a fit of the kinematic distributions. The q qbar  initial subprocess is separated using different dependencies of the distributions on the initial  states, and the linearized forward-backward asymmetry is measured to be A(FB)**(1)  = 0.048+0.095-0.087+0.020-0.029.


pdgid: Q007CMD
text:
SIRUNYAN 2019BX based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. A set of  parton-level normalized differential cross sections is measured to extract coefficients of the  spin-dependent t tbar production density matrix. The coefficients are compared with the NLO MC  simulations and with the NLO QCD calculation including EW corrections.


pdgid: Q007CMD
text:
KHACHATRYAN 2016AI based on 19.5 fb**-1 of p p data at sqrt(s) = 8 TeV, using lepton  angular distributions as a function of the t tbar-system kinematical variables.


pdgid: Q007CED
text:
TUMASYAN 2023J based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. Four  T-odd triple products of momenta of the final-state particles are measured to constrain  the dimensionless chromoelectric top quark dipole moment. No evidence of CP-violating effects  is found, which is consistent with the SM expectation.


pdgid: Q007CED
text:
TUMASYAN 2023U based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. CP-odd  Lorentz  pseudo-scalar products  O_{{1}} =  epsilon(p_{{t}}p_{{tbar}}p(lepton+)p(lepton-)) and  O_{{3}} =  epsilon(p_{{b}}p_{{bbar}}p(lepton+)p(lepton-))  constructed from  the momenta of t, tbar, lepton+, lepton- and of b, bbar, lepton+,   lepton-, respectively, are measured and used to constrain the dimensionless chromoelectric top  quark  dipole moment. No evidence for CP-violating effects is found, which is consistent with  the SM  expectation.


pdgid: Q007CED
text:
SIRUNYAN 2020AM based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. t tbar  with low and high boosts are reconstructed through a fit of the kinematic distributions. The q qbar  initial subprocess is separated using different dependences of the distributions on the initial  states, and the linearized forward-backward asymmetry is measured to be  A(FB)**(1) = 0.048+0.095-0.087+0.020-0.029.


pdgid: Q007CED
text:
SIRUNYAN 2019BX based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. A set of  parton-level normalized differential cross sections is measured to extract coefficients of the  spin-dependent t tbar production density matrix and constrain the anomalous chromomagnetic and  chromoelectric dipole moments of the top quark. The coefficients are compared with the NLO MC  simulations and with the NLO QCD calculation including EW corrections.


pdgid: Q007SC
text:
ABAZOV 2016A based on 9.7 fb**-1 of data. A matrix element method is used. It corresponds  to evidence of spin correlation at 4.2sigma and is in agreement with the NLO SM prediction  0.80+0.01-0.02.


pdgid: Q007SC
text:
This is a combination of the lepton + jets analysis presented in ABAZOV 2012B and the dilepton measurement of ABAZOV 2011AE. It provides a 3.1 sigma evidence for the t tbar spin correlation.


pdgid: Q007SC
text:
Based on 5.3 fb**-1 of data. The error is statistical and systematic combined. A matrix element method is used.


pdgid: Q007SC
text:
Based on 4.3 fb**-1 of data. The measurement is based on the angular study of the top quark decay products in the helicity basis.The theory prediction is kappa ~~ 0.40.


pdgid: Q007SC
text:
Based on 5.4 fb**-1 of data using a matrix element method. The error is statistical and systematic combined. The no-correlation hypothesis is excluded at the 97.7% CL.


pdgid: Q007SC
text:
Based on 5.4 fb**-1 of data. The error is statistical and systematic combined. The NLO QCD prediction is C = 0.78+-0.03. The neutrino weighting method is used for reconstruction of kinematics.


pdgid: Q007TSC
text:
AAD 2024CO based on 140 fb**-1 of p p data at sqrt(s) = 13 TeV. The measured lepton  distributions are consistent with SM predictions. Entanglement is observed from the measurement  close to the t tbar threshold region, 340 GeV < m(t tbar) < 380 GeV,  with more than 5sigma significance.


pdgid: Q007TSC
text:
HAYRAPETYAN 2024AS based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. The measured  polarization vector (P(i)) and spin correlation matrix (C(ij)) are consistent with SM  predictions. Entanglement is observed from the measurement of Dtilde = (C(nn) -  C(rr) - C(kk))/3 in the high t tbar mass region, m(t tbar) >  800 GeV and |cos theta| < 0.4, with a significance of 6.1sigma.


pdgid: Q007TSC
text:
SIRUNYAN 2019BX based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. A set of  parton-level normalized differential cross sections sensitive to coefficients of the spin-dependent  t tbar production density matrix is measured. The distributions and coefficients are compared  with the NLO MC simulations and with the NLO QCD calculation including EW corrections. Three errors  are from statistics, experimental systematics, and theory.


pdgid: Q007TSC
text:
KHACHATRYAN 2016X based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. Uses a  template fit method. Spin correlation strength in the helicity basis is given by  A(hel) = 0.23+-0.03+0.05-0.04.


pdgid: Q007TSC
text:
AAD 2015J based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Uses a fit including  a linear superposition of Delta phi distribution from the SM NLO simulation with coefficient  f_{{SM}} and from t tbar simulation without spin correlation with coefficient (1 -  f_{{SM}}).


pdgid: Q007TSC
text:
The S-ratio is defined as the SM spin correlation in the like-helicity gluon-gluon collisions normalized to the no spin correlation case; see eq.(6) for the LO expression.


pdgid: Q007TUG
text:
AAD 2022T based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. The results are  obtained from the 95% CL upper limits on the single top-quark productions CS(u g --> t).B(t --> b W).B(W --> lepton nu) <  3.0 pb and CS(c g --> t).B(t --> b W).B(W --> lepton nu) <  4.7 pb. These are interpreted as limits on couplings in an EFT |C(uG)**ut|/Lambda**2  < 0.057 TeV**-2 and |C(uG)**ct|/Lambda**2 < 0.14 TeV**-2. The  results also correspond to B(t --> u g) < 6.1E-5 and B(t --> c g) <  3.7E-4.


pdgid: Q007TUG
text:
KHACHATRYAN 2017G based on 5.0 and 19.7 fb**-1 of p p data at sqrt(s) = 7 and 8 TeV,   respectively. t-channel single top production is used. The result corresponds to B(t --> u g)   < 2.0E-5 or B(t --> c g) < 4.1E-4.


pdgid: Q007TUG
text:
AAD 2016AS based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV.  The results are   obtained from the 95% CL upper limit on the single top-quark production CS(q g --> t).B(t --> b W)B(W --> l nu)   < 2.9 pb, B(t --> u g) < 4.0E-5 and B(t --> c g) < 20E-5.


pdgid: Q007TUG
text:
Based on 2.05 fb**-1 of p p data at sqrt(s) = 7 TeV. The results are obtained from the 95% CL upper limit on the single top-quark production CS(q g --> t).B(t --> b W) < 3.9 pb, for q=u or q=c, B(t --> u g) < 5.7E-5 and B(t --> u g) < 2.7E-4.


pdgid: Q007TUG
text:
Based on 2.3 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. Upper limit of single top quark production cross section 0.20 pb and 0.27 pb via FCNC t-u-g and t-c-g couplings, respectively, lead to the bounds without assuming the absence of the other coupling. B(t --> u + g) < 2.0E-4 and B(t --> c + g) < 3.9E-3 follow.


pdgid: Q007TUG
text:
Based on 2.2 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. Upper limit of single top  quark production cross section CS(u(c) + g --> t) < 1.8 pb (95% CL) via FCNC t-u-g and t-c-g couplings lead to the bounds. B(t --> u + g) < 3.9E-4 and B(t --> c + g) < 5.7E-3 follow.


pdgid: Q007TUG
text:
Result is based on 230 pb**-1 of data at sqrt(s) = 1.96 TeV. Absence of single top quark production events  via FCNC t-u-g and t-c-g couplings lead to the upper bounds on the dimensioned couplings, kappa**utg/Lambda and kappa**ctg/Lambda, respectively.


pdgid: Q007MAH
text:
AAD 2024J based on 139 fb^{-1} of data at sqrt(s) = 13 TeV. Events containing one or two  leptons (e, mu) are used. The SM branching ratio for the Higgs boson decay into b b is  assumed. The result is consistent with the SM prediction of no CP-odd coupling, alpha  = 0.


pdgid: Q007A03
text:
SIRUNYAN 2020BH based on 137 fb^{-1} of data at sqrt(s) = 13 TeV. Kinematic distributions  of t tbar are compared with predictions by different values of the top Yukawa coupling in loop  corrections, where the scaling of the SM coupling is used within the kappa-framework. The  notET cut applies only to the same-flavor dilepton, not e mu events.


pdgid: Q007A03
text:
SIRUNYAN 2019BY based on 35.8 fb^{-1} of data at sqrt(s) = 13 TeV. Experimental  sensitivity is enhanced in the low M(t tbar) region. The distributions of  M(t tbar), |y(t) - y(tbar)|, and the  number of reconstructed jets are compared with predictions by different Yukawa couplings which  include NNLO QCD and NLO EW corrections.


pdgid: Q007TTH
text:
AAD 2020Z based on 139 fb**-1 of p p data at 13 TeV. Assuming a CP-even  coupling the t tbar H process is observed with a significance of 5.2 sigma, and the  measured sigma(t tbar H).B(gamma gamma) = 1.64+0.38-0.36+0.17-0.14 fb.  A CP-mixing angle |alpha| > 43degree is excluded at 95% CL.


pdgid: Q007TTH
text:
SIRUNYAN 2020AS based on 137 fb**-1 of p p data at 13 TeV. The t tbar H process  is observed with a significance of 6.6 sigma, and the measured sigma(t tbar H).B(gamma gamma) =  1.56+0.33-0.30+0.09-0.08 fb. The fractional contribution of the CP-odd component is  measured to be f(CP)**t tbar H = 0.00+-0.33.


pdgid: Q007TTH
text:
SIRUNYAN 2019R based on 35.9 fb**-1 of p p data at 13 TeV. Multivariate techniques  are employed to separate the signal from the dominant t tbar+jets background. The result is for  mass(H) = 125 GeV. The measured ratio corresponds to a signal significance of 1.6sigma  above the background-only hypothesis.


pdgid: Q007TTH
text:
SIRUNYAN 2018BD based on 35.9 fb**-1 of p p data at 13 TeV. A combined fit of signal  and background templates to data is performed in six event categories separated by jet and  b-jet multiplicities. An upper limit of 3.8 is obtained for the cross section ratio.


pdgid: Q007TTH
text:
SIRUNYAN 2018L based on up to 5.1, 19.7, and 35.9 fb**-1 of p p data at 7, 8, and 13  TeV, respectively. An excess of events is observed, with a significance of 5.2 standard deviations,  over the expectation from the background-only hypothesis. The result is for the Higgs boson mass of  125.09 GeV.


pdgid: Q007TTH
text:
Based on 4.5 fb**-1 of data at 7 TeV and 20.3 fb**-1 at 8 TeV. The result is for mass(H) = 125.4 GeV. The measurement constrains the top quark  Yukawa coupling strength parameter kappa(t)  = Y_{{t}}/Y_{{t}}^SM() to be -1.3 < kappa(t) < 8.0 (95% CL).


pdgid: Q007TTH
text:
Based on 5.1 fb**-1 of p p data at 7 TeV and 19.7 fb**-1 at 8 TeV. The results are obtained by assuming the SM decay branching fractions for the Higgs boson of mass 125.6 GeV. The  signal strength for individual Higgs decay channels are given in Fig. 13, and the preferred region  in the (kappa(V), kappa(f)) space is given in Fig. 14.


pdgid: Q007STA
text:
ACOSTA 2004H bounds single top-quark production from the s-channel W-exchange process, q^'() qbar --> t bbar, and the t-channel W-exchange process, q^'() g --> q t bbar. Based on ~106pb**-1 of data.


pdgid: Q007STA
text:
ACOSTA 2002 bounds the cross section for single top-quark production via the s-channel W-exchange process, q^' qbar --> t bbar. Based on ~106pb**-1 of data.


pdgid: Q007STA
text:
ACOSTA 2002 bounds the cross section for single top-quark production via the t-channel W-exchange process, q^' g --> q t bbar. Based on ~106pb**-1 of data.


pdgid: Q007STB
text:
AALTONEN 2016 based on 9.5 fb**-1 of data. This includes, as a part, the result of  AALTONEN 2014K. Combination of this result with that of AALTONEN 2014O gives a s + t cross  section of 3.02+0.49-0.48 pb and |V_tb| > 0.84 (95% CL).


pdgid: Q007STB
text:
AALTONEN 2015H based on 9.7 fb**-1 of data per experiment. The result is for mass(t) = 172.5 GeV, and is a combination of the CDF measurements (AALTONEN 2016) and the D0 measurements (ABAZOV 2013O) on the t-channel single t-quark production cross section. The result is consistent with the NLO+NNLL SM prediction and gives |V_tb| = 1.02+0.06-0.05 and |V_tb| > 0.92 (95% CL).


pdgid: Q007STB
text:
AALTONEN 2015H is a combined measurement of s-channel single top cross section by CDF + D0. AALTONEN 2014M is not included.


pdgid: Q007STB
text:
Based on 9.45 fb**-1 of data, using neural networks to separate signal from backgrounds. The result is for mass(t) = 172.5 GeV. Combination of this result with the CDF measurement in the 1 lepton channel AALTONEN 2014L gives 1.36+0.37-0.32 pb, consistent with the SM prediction, and is 4.2 sigma away from the background only hypothesis.


pdgid: Q007STB
text:
Based on 9.4 fb**-1 of data, using neural networks to separate signal from backgrounds. The result is for mass(t) = 172.5 GeV. The result is 3.8 sigma away from the background only hypothesis.


pdgid: Q007STB
text:
Based on 9.7 fb**-1 of data per experiment. The result is for mass(t) = 172.5 GeV, and is a combination of the CDF measurements AALTONEN 2014L, AALTONEN 2014K and the D0 measurement ABAZOV 2013O on the s-channel single t-quark production cross section. The result is consistent with the SM prediction of 1.05+-0.06 pb and the significance of the observation is of 6.3 standard deviations.


pdgid: Q007STB
text:
Based on 7.5 fb**-1 of data. Neural network is used to discriminate signals (s-, t- and Wt-channel single top production) from backgrounds. The result is consistent with the SM prediction, and gives |V_tb| = 0.95+-0.09(stat + syst)+-0.05(theory) and |V_tb| > 0.78 (95% CL). The result is for mass(t) = 172.5 GeV.


pdgid: Q007STB
text:
Based on 9.7 fb**-1 of data. Events with lepton + notET + 2 or 3 jets (1 or 2 b-tag) are analysed, assuming mass(t) = 172.5 GeV. The combined s- + t-channel cross section gives |V(tb) f_{{1}}^L()| = 1.12+0.09-0.08, or |V_tb| > 0.92 at 95% CL for f_{{1}}^L() = 1 and a flat prior within 0<= |V(tb)|**2 <= 1.


pdgid: Q007STB
text:
Based on 5.4 fb**-1 of data. The error is statistical + systematic combined. The results are for mass(t) = 172.5 GeV. Results for other mass(t) values are given in Table 2 of ABAZOV 2011AA.


pdgid: Q007STB
text:
Based on 5.4 fb**-1 of data and for mass(t) = 172.5 GeV. The error is statistical + systematic combined. Results for other mass(t) values are given in Table III of ABAZOV 2011AD. The result is obtained by assuming the SM ratio between t b (s-channel) and t q b (t-channel) productions, and gives |V(tb) f_{{1}}^L()| = 1.02+0.10-0.11, or |V(tb)| > 0.79 at 95% CL for a flat prior within 0 < |V(tb)|**2 < 1.


pdgid: Q007STB
text:
Result is based on 2.1 fb**-1 of data. Events with large missing E(T) and jets with at least one b-jet without identified electron or muon are selected. Result is obtained when observed 2.1 sigma excess over the background originates from the signal for mass(t) = 175 GeV, giving |V_tb| = 1.24+0.34-0.29+-0.07(theory).


pdgid: Q007STB
text:
Result is based on 4.8 fb**-1 of data. Events with an isolated reconstructed tau lepton, missing E(T) + 2, 3 jets with one or two b-tags are selected. When combined with ABAZOV 2009Z result for e + mu channels, the s- and t-channels combined cross section is 3.84+0.89-0.83 pb.


pdgid: Q007STB
text:
Based on 3.2 fb**-1 of data. Events with isolated lepton + notET + jets with at least one b-tag are analyzed and s- and t-channel single top events are selected by using the likelihood function, matrix element, neural-network, boosted decision tree, likelihood function optimized for s-channel process, and neural-networked based analysis of events with notET that has sensitivity for W --> tau nu decays. The result is for mass(t) = 175 GeV, and the mean value decreases by 0.02 pb/GeV for smaller mass(t). The signal has 5.0 sigma significance. The result gives |V_tb| = 0.91+-0.11 (stat+syst)+-0.07 (theory), or |V_tb| > 0.71 at 95% CL.


pdgid: Q007STB
text:
Result is based on 2.2 fb**-1 of data. Events with isolated lepton + notET + 2, 3 jets with at least one b-tag are selected, and s- and t-channel single top events are selected by using likelihood, matrix element, and neural network discriminants. The result can be interpreted as |V_tb| = 0.88+0.13-0.12(stat + syst)+-0.07(theory), and |V_tb| > 0.66 (95% CL) under the |V_tb| < 1 constraint.


pdgid: Q007STB
text:
Result is based on 0.9 fb**-1 of data. Events with isolated lepton + notET + 2, 3, 4 jets with one or two b-vertex-tag are selected, and contributions from W + jets, t tbar, s- and t-channel single top events are identified by using boosted decision trees, Bayesian neural networks, and matrix element analysis. The result can be interpreted as the measurement of the CKM matrix element |V_tb| = 1.31+0.25-0.21, or |V_tb| > 0.68 (95% CL) under the |V_tb| < 1 constraint.


pdgid: Q007STB
text:
ABAZOV 2005P bounds single top-quark production from either the s-channel W-exchange process, q^'() qbar --> t bbar, or the t-channel W-exchange process, q^'() g --> q t bbar, based on ~230pb**-1 of data.


pdgid: Q007STB
text:
ACOSTA 2005N bounds single top-quark production from the t-channel W-exchange process (q^'() g --> q t bbar), the s-channel W-exchange process (q^'() qbar --> t bbar), and from the combined cross section of t- and s-channel. Based on ~ 162 pb**-1 of data.


pdgid: Q007ST5
text:
AAD 2024M based on 255 pb**-1 of data. The sum and ratio of the cross sections are  measured to be CS(t q + tbar q)=27.1+4.4-4.1+4.4-3.7 pb and CS(t q)/CS(tbar q) =  2.73+1.43-0.82+1.01-0.29, respectively. All results are in agreement with the SM.


pdgid: Q007ST7
text:
Based on 4.59 fb**-1 of data, using neural networks for signal and background separation. CS(t q) = 46+-1+-6 pb and CS(tbar q) = 23+-1+-3 pb are separately measured,  as well as their ratio R = CS(t q)/CS(tbar q) = 2.04+-0.13+-0.12. The  results  are for  mass(t)  = 172.5 GeV, and those for other mass(t) values are given by eq.(4)  and Table  IV. The  measurements  give |V(tb)| = 1.02+-0.07 or |V(tb)| > 0.88  (95% CL).


pdgid: Q007ST7
text:
Based on 1.04 fb**-1 of data. The result gives |V(tb)| = 1.13+0.14-0.13 from the ratio  CS(exp)/CS(th), where CS(th) is the SM prediction for |V(tb)| = 1. The 95% CL lower bound of |V(tb)| > 0.75 is found if |V(tb)| < 1 is assumed. CS(t) = 59+18-16 pb and CS(tbar) = 33+13-12 pb are found for the separate single t  and tbar production cross sections, respectively. The results assume mass(t) = 172.5 GeV for the acceptance.


pdgid: Q007ST7
text:
Based on 1.17 fb**-1 of data for lepton = mu, 1.56 fb**-1 of data for lepton = e at 7 TeV collected  during 2011. The result gives |V(tb)| = 1.020+-0.046(meas)+-0.017(th). The 95% CL lower bound  of |V(tb)| > 0.92 is found if |V(tb)| < 1 is assumed. The results assume mass(t) = 172.5 GeV for the acceptance.


pdgid: Q007ST7
text:
Based on 36 pb**-1 of data. The first error is statistical + systematic combined, the second is luminosity. The result gives |V(tb)| = 1.114+-0.22(exp)+-0.02(th) from the ratio CS(exp)/CS(th), where CS(th) is the SM prediction for |V(tb)| = 1. The 95% CL lower bound of |V(tb)| > 0.62 (0.68) is found from the 2D (BDT) analysis under the constraint 0 < |V(tb)|**2 < 1.


pdgid: Q007ST8
text:
AABOUD 2017T based on 20.2 fb**-1 of data. A maximum-likelihood fit to neural-network  discriminant distributions is used to separate signal and background events. Individual cross  sections are measured as CS(t q) = 56.7+4.3-3.8 pb and CS(tbar q) = 32.9+3.0-2.7 pb,  while their ratio is given by CS(t q)/CS(tbar q) = 1.72+-0.09. A lower limit  |V_tb| > 0.92 (95% CL) is obtained. Measured total and differential cross  sections are described well by the SM.


pdgid: Q007ST8
text:
Based on 19.7 fb**-1 of data. The t and tbar production  cross  sections are measured  separately as sigma(t-ch.)(t) = 53.8+-1.5+-4.4 pb and sigma(t-ch.)(tbar) = 27.6+-1.3+-3.7 pb, respectively, as well as their ratio R(t-ch) = sigma(t-ch.)(t)/sigma(t-ch.)(tbar)  = 1.95+-0.10+-0.19, in agreement with the SM predictions. Combination with a previous CMS result at sqrt(s) = 7 TeV [CHATRCHYAN 2012BQ] gives |V_tb|  = 0.998+-0.038+-0.016. Also obtained is the ratio R(8/7) = sigma(t-ch.)(8TeV)/sigma(t-ch.)(7TeV)  = 1.24+-0.08+-0.12.


pdgid: Q007TT8
text:
AAD 2016U based on 20.3 fb**-1 of data, using a maximum-likelihood fit of a matrix  element method discriminant. The same data set as in AAD 2015A is used. The result  corresponds to an observed significance of 3.2sigma.


pdgid: Q007TT8
text:
KHACHATRYAN 2016AZ based on 19.7 fb**-1 of data, using a multivariate analysis to  separate signal and backgrounds. The same method is applied to 5.1 fb**-1 of data at sqrt(s) =  7 TeV, giving 7.1+-8.1 pb.  Combining both measurements, the observed significance is  2.5sigma. A best fit value of 2.0+-0.9 is obtained for the combined ratio of the measured  values and SM expectations.


pdgid: Q007TT8
text:
AAD 2015A based on 20.3 fb**-1 of data, using a multivariate analysis to separate signal  and backgrounds. The 95% CL upper bound of the cross section is 14.6 pb. The results are  consistent with the SM prediction of 5.61+-0.22 pb at approximate NNLO.


pdgid: Q007STX
text:
AAD 2024AL based on 140 fb**-1 of data. The cross section ratio is measured to be  CS(t q)/CS(tbar q) = 1.636+-0.036+-0.034. A lower limit |V_tb| > 0.95  (95% CL) is obtained. All results are in agreement with the SM. The measurements are used to  constrain a four-quark operator and a Higgs-quark operator in SMEFT.


pdgid: Q007STX
text:
SIRUNYAN 2020D based on 35.9 fb**-1 of data. Different categories of jet and b jet  multiplicity and multivariate discriminators are used to separate signal and background events. The  cross section ratio is measured to be CS(t q)/CS(tbar q) = 1.68+-0.02+-0.05. CKM  matrix element is obtained as |f(LV)V_tb| = 0.98+-0.07(exp)+-0.02(theo) where  f(LV) is an anomalous form factor. All results are in agreement with the SM.


pdgid: Q007STX
text:
AABOUD 2017H based on 3.2 fb**-1 of data. A maximum-likelihood fit to neural-network  discriminant distributions is used to separate signal and background events. The third error is for  luminosity. The cross section ratio is measured to be CS(t q)/CS(tbar q) =  1.72+-0.09+-0.18. A lower limit |V_tb| > 0.84 (95% CL) is obtained. All  results are in agreement with the SM.


pdgid: Q007STX
text:
SIRUNYAN 2017AA based on 2.2 fb**-1 of data. A multivariate discriminator is used to  separate signal and background events. The four errors are from statitics, experimental  systematics, theory, and luminosity. The cross section ratio is measured to be CS(t q)/CS(tbar q) =  1.81+-0.18+-0.15. CKM matrix element is obtained as |V_tb| =  1.05+-0.07(exp)+-0.02(theo). All results are in agreement with the SM.


pdgid: Q007TTX
text:
AAD 2023E based on 139 fb**-1 of data. The signal significance is 3.3sigma over  the background-only hypothesis. The result is consistent with the NLO SM prediction of 10.32+0.40-0.36  pb.


pdgid: Q007THX
text:
AAD 2022Q based on 139 fb**-1 of data. The measured value includes B(H --> tau tau)  and corresponds to the rapidity range |y(H)| <2.5. The value is consistent with the  SM prediction, where B(H --> tau tau) = 6.3% for mass(H) = 125.09 GeV.


pdgid: Q007THX
text:
AABOUD 2018BK based on 79.8 fb**-1 of data. The observed significance is 5.8sigma  relative to the background-only hypothesis. The measurement is consistent with the NLO SM  prediction of 507+35-50 fb. See Table 3 and Fig. 5 for measurements of individual modes.  Combined with the measurements at 7 and 8 TeV, the observed significance is 6.3sigma.


pdgid: Q007WT7
text:
Based on 4.9 fb**-1 of data. The result gives V(tb) = 1.01+0.16-0.13(exp)+0.03(th). V(tb) > 0.79 (95% CL) if V(tb) < 1 is assumed. The results assume mass(t) = 172.5 GeV for the acceptance.


pdgid: Q007WT8
text:
AAD 2021AT based on 20.2 fb**-1 of data. In this single lepton channel, only single  neutrino is emitted, so that both W and t can be reconstructed. A neural network is trained  to separate signal from background. The measured cross section agrees with the NLO+NNLL SM  prediction of 22.4+-0.6(scale)+-1.4(PDF) pb.


pdgid: Q007WT8
text:
AAD 2016B based on 20.3 fb**-1 of data. The result gives |V_tb|  = 1.01+-0.10 and  |V_tb| > 0.80 (95% CL) without assuming unitarity of the CKM matrix. The  results assume mass(t) = 172.5 GeV for the acceptance.


pdgid: Q007WT8
text:
Based on 12.2 fb**-1 of data.  Events with two oppositely charged leptons, large notET and a b-tagged jet are selected, and a multivariate analysis is used to separate the signal from  the backgrounds. The result is consistent with the SM prediction of 22.2+-0.6(scale)+-1.4(PDF) pb at approximate NNLO.


pdgid: Q007WTX
text:
AAD 2024BS based on 140 fb**-1 of data. The errors quoted are statistical, systematic,  and the uncertainty from luminosity. The result is consistent with the NLO+NNLL SM prediction of  79.3+1.9-1.8(scale)+-2.2(PDF) pb.


pdgid: Q007WTX
text:
TUMASYAN 2023T based on 138 fb**-1 of data. The result is consistent with the NNLO SM  prediction. The differential cross sections are measured as a function of six kinematical variables  and are consistent with the NLO SM prediction.


pdgid: Q007WTX
text:
TUMASYAN 2021E based on 36 fb**-1 of data. A boosted decision tree is used to separate   the signal from the dominant t tbar backgrounds. The result corresponds to an observation with   a significance exceeding 5 sigma and is consistent with the NNLO QCD prediction of 71.7+-1.8(scale)+-3.4(PDF) pb  or with the approximate NNNLO SM prediction of  79.5+1.9-1.8(scale)+2.0(PDF)  pb.


pdgid: Q007WTX
text:
AABOUD 2018H based on 3.2 fb**-1 of data. The last error is from luminosity. A  multivariate analysis is used to separate the signal from the backgrounds. The result is consistent  with the NLO+NNLL SM prediction of 71.7+-1.8(scale)+-3.4(PDF) pb.


pdgid: Q007WTX
text:
SIRUNYAN 2018DL based on 35.9 fb**-1 of data. The last error is from luminosity. A  multivariate analysis is used to separate the signal from the backgrounds. The result is consistent  with the NLO+NNLL SM prediction of 71.7+-1.8(scale)+-3.4(PDF) pb.


pdgid: Q007ZTX
text:
TUMASYAN 2022L based on 138 fb**-1 of data at 13 TeV. The result is for a dilepton  invariant masses above 30 GeV. It agrees with the NLO SM   prediction of 94.2+1.9-1.8(scale)+-2.5(PDF) fb. The  ratio of t and tbar  production  cross sections is measured as  2.37+0.56-0.42+0.27-0.13. The spin asymmetry is  measured to be  0.54+-0.16+-0.06. Both  measurements are in agreement with the SM predictions.


pdgid: Q007ZTX
text:
AAD 2020AB based on 139 fb**-1 of data at 13 TeV. Neural networks are used to  discriminate t Z q signal from backgrounds. The result is for the cross section CS(p p --> t lepton+ lepton- q),  including non-resonant dilepton pairs, for dilepton invariant masses above 30 GeV and is consistent  with the NLO SM prediction of 102+5-2 fb.


pdgid: Q007ZTX
text:
SIRUNYAN 2019BF based on 77.4 fb**-1 of data. Two BDT's are used in the analysis: one to  discriminate prompt leptons from non-prompt ones; and one to discriminate t Z q signal from  backgrounds. The result is for the cross section CS(p p --> t Z q --> t lepton+ lepton- q) for  dilepton invariant masses above 30 GeV and is consistent with the NLO SM prediction of 94.2+-3.1 fb.


pdgid: Q007ZTX
text:
AABOUD 2018AE based on 36.1 fb**-1 of data. A multivariate analysis is used to separate  the signal from the backgrounds. The result is consistent with the NLO SM prediction of 800 fb  with a scale uncertainty of +6.1%.


pdgid: Q007ZTX
text:
SIRUNYAN 2018Z based on 35.9 fb**-1 of data. A multivariate analysis is used to separate  the signal from the backgrounds. The result is for the cross section CS(p p --> t Z q --> W b lepton+ lepton- q)  and is consistent with the NLO SM prediction of 94.2+1.9-1.8(scale)+-2.5(PDF) fb.  Superseded by SIRUNYAN 2019BF.


pdgid: Q007GTX
text:
AAD 2023BN measured fiducial cross section for p p --> t gamma at 13 TeV with 139  fb**-1 of data. The measured cross section is 688+-23+75-71 fb, to be compared with the NLO  SM prediction of 515+36-42 fb.


pdgid: Q007A08
text:
Reported a statistical significance of 3.4 standard deviations based on 138 fb**-1 of data at  13 TeV.


pdgid: Q007STE
text:
AARON 2009A looked for single top production via FCNC in e+- p collisions at HERA with 474 pb**-1 of data at sqrt(s) = 301 -- 319 GeV. The result supersedes that of AKTAS 2004.


pdgid: Q007STE
text:
AKTAS 2004 looked for single top production via FCNC in e+- collisions at HERA with 118.3 pb**-1, and found 5 events in the e or mu channels while 1.31+-0.22 events are expected from the Standard Model background.  No excess was found for the hadronic channel.  The observed cross section of sigma(e p --> e t X) = 0.29+0.15-0.14~pb at sqrt(s) = 319~GeV gives the quoted upper bound if the observed events are due to statistical fluctuation.


pdgid: Q007STE
text:
CHEKANOV 2003 looked in 130.1 pb**-1 of data at sqrt(s) = 301 and 318 GeV. The limit is for sqrt(s) = 318 GeV and assumes mass(t) = 175 GeV.


pdgid: Q007TX
text:
ABAZOV 2016F based on 9.7 fb**-1 of data. The result is for mass(t) = 172.5 GeV, and the  mass(t) dependence is shown in Table V and Fig. 9. The result agrees with the NNLO+NNLL SM  prediction of 7.35+0.23-0.27 pb.


pdgid: Q007TX
text:
Based on 9 fb**-1 of data. The measurement is in the channel t tbar --> ( b lepton nu ) ( b tau nu ),  where  tau decays into hadrons (tau_{{h}}), and lepton (e or mu) include lepton  from  tau decays (tau_{{{{mathit ell}}}}). The result is for mass(t) = 173 GeV.


pdgid: Q007TX
text:
Based on 8.8 fb**-1 of data. Combination of CDF and D0 measurements given, respectively, by CS(ttbar; CDF) = 7.63+-0.31+-0.36+-0.16  pb, CS(ttbar; D0)  = 7.56+-0.20+-0.32+-0.46 pb. All the results are for mass(t) = 172.5 GeV.  The mass(t) dependence of the mean value is parametrized in eq. (1) and shown in Fig. 2.


pdgid: Q007TX
text:
Based on 9.7 fb**-1 of data. Differential cross sections with respect to , |y(top)|, E(T)(top) are shown in  Figs. 9, 10, 11, respectively, and are compared to the predictions of MC models.


pdgid: Q007TX
text:
Based on 8.7 fb**-1 of p pbar collisions at sqrt(s) = 1.96 TeV. Measure the t tbar cross section simultaneously with the fraction of t --> W b decays. The correlation coefficient between those two measurements is -0.434. Assume unitarity of the 3x3 CKM matrix and set |V_tb| > 0.89 at 95% CL.


pdgid: Q007TX
text:
Based on 2.2 fb**-1 of data in p pbar collisions at 1.96 TeV. The result assumes the acceptance for mass(t) = 172.5 GeV.


pdgid: Q007TX
text:
Based on 1.12 fb**-1 and assumes mass(t) = 175 GeV, where the cross section changes by +-0.1 pb for every -+1 GeV shift in mass(t). AALTONEN 2011D fits simultaneously the t tbar production cross section and the b-tagging efficiency and find improvements in both measurements.


pdgid: Q007TX
text:
Based on 2.7 fb**-1. The first error is from statistics and systematics, the second is from luminosity. The result is for mass(t) = 175 GeV. AALTONEN 2011W fits simultaneously a jet flavor discriminator  between b-, c-, and light-quarks, and find significant reduction in the systematic error.


pdgid: Q007TX
text:
Based on 2.2 fb**-1. The result is for mass(t) = 172.5 GeV. AALTONEN 2011Y selects multi-jet events with large notET, and vetoes identified electrons and muons.


pdgid: Q007TX
text:
Based on 5.3 fb**-1. The error is statistical + systematic + luminosity combined. The result is for mass(t) = 172.5 GeV. The results for other mass(t) values are given in Table XII and eq.(10) of ABAZOV 2011E.


pdgid: Q007TX
text:
Combination of a dilepton measurement presented in ABAZOV 2011Z (based on 5.4 fb**-1), which yields 7.36+0.90-0.79 (stat+syst) pb, and the lepton + jets measurement of ABAZOV 2011E. The result is for mass(t) = 172.5 GeV. The results for other mass(t) values is given by eq.(5) of ABAZOV 2011A.


pdgid: Q007TX
text:
Based on 2.9 fb**-1. Result is obtained from the fraction of signal events in the top quark mass measurement in the all hadronic decay channel.


pdgid: Q007TX
text:
Based on 1.7 fb**-1. The result is for mass(t) = 175 GeV. AALTONEN 2010V uses soft electrons from b-hadron decays to suppress W+jets background events.


pdgid: Q007TX
text:
Based on 4.6 fb**-1. The result is for mass(t) = 172.5 GeV.  The ratio CS(t tbar --> lepton+jets) / CS(Z / gamma^*() --> lepton lepton) is measured and then multiplied by the theoretical Z / gamma^*() --> lepton lepton cross section of CS(Z / gamma^*() --> lepton lepton) = 251.3+-5.0 pb, which is free from the luminosity error.


pdgid: Q007TX
text:
Based on 1 fb**-1. The result is for mass(t) = 175 GeV. 7.9+-2.3 pb is found for mass(t) = 170GeV. ABAZOV 2010I uses a likelihood discriminant to separate signal from background, where the background model was created from lower jet-multiplicity data.


pdgid: Q007TX
text:
Based on 1 fb**-1. The result is for mass(t) =  170 GeV. For mass(t) = 175 GeV, the result is 6.3+1.2-1.1(stat)+-0.7(syst)+-0.4(lumi)pb. Cross section of t tbar production has been measured in the t tbar --> tau_h + jets topology, where tau_{{h}} denotes hadronically decaying tau leptons. The result for the cross section times the branching ratio is CS(t tbar) . B(t tbar --> tau_h + jets) =  0.60+0.23-0.22+0.15-0.14+-0.04pb for mass(t) = 170 GeV.


pdgid: Q007TX
text:
Based on 1.1 fb**-1. The result is for B(W --> lepton nu) = 10.8% and mass(t) = 175 GeV; the mean value is  9.8 for mass(t) = 172.5 GeV and 10.1 for mass(t) = 170 GeV. AALTONEN 2009AD used high pT e or mu with an isolated track to select t tbar decays into dileptons including lepton = tau. The result is based on the candidate event samples with and without  vertex b-tag.


pdgid: Q007TX
text:
Based on 2 fb**-1. The result is for mass(t) = 175 GeV;  the mean value is 3% higher for mass(t) = 170 GeV and 4% lower for mass(t) = 180 GeV.


pdgid: Q007TX
text:
Result is based on 1 fb**-1 of data. The result is for mass(t) = 170 GeV, and the mean value decreases with increasing mass(t); see their Fig. 2. The result is obtained after combining lepton + jets,  lepton lepton, and lepton tau final states, and the ratios of the extracted cross sections are  R**lepton lepton / lepton j = 0.86+0.19-0.17 and  R**lepton tau / lepton lepton - lepton j = 0.97+0.32-0.29, consistent with the SM expectation  of R = 1. This leads to the upper bound of B(t --> b H+) as a function of mass(H+).  Results are shown in their Fig. 1 for B(H+ --> tau nu) = 1 and B(H+ -->c sbar) = 1 cases. Comparison of the mass(t) dependence of the extracted cross section and a partial NNLO prediction gives  mass(t) = 169.1+5.9-5.2 GeV.


pdgid: Q007TX
text:
Result is based on 0.9 fb**-1 of data. The first error is from stat + syst, while the latter error  is from luminosity. The result is for mass(t)=175 GeV, and the mean value changes by -0.09 pb.[mass(t)(GeV)-175].


pdgid: Q007TX
text:
Result is based on 0.9 fb**-1 of data. The cross section is obtained from the lepton + >=3jet event rates with 1 or 2 b-tag, and also from the kinematical likelihood analysis of the lepton+ 3, 4 jet events. The result is for mass(t)= 172.6 GeV, and its mass(t) dependence shown in Fig. 3 leads to the constraint mass(t) = 170+-7 GeV when compared to the SM prediction.


pdgid: Q007TX
text:
Result is based on 360 pb**-1 of data. Events with high pT oppositely charged dileptons  lepton+ lepton- (lepton = e, mu) are used to obtain cross sections for t tbar, W+ W-, and Z --> tau+ tau- production processes simultaneously.  The other cross sections are given in Table IV.


pdgid: Q007TX
text:
Based on 1.02 fb**-1 of data. Result is for mass(t) = 175 GeV. Secondary vertex b-tag and neural network selections are used to achieve a signal-to-background ratio of about 1/2.


pdgid: Q007TX
text:
Based on 425 pb**-1 of data. Result is for mass(t) = 175 GeV. For mass(t) = 170.9 GeV, 7.8+-1.8(stat + syst) pb is obtained.


pdgid: Q007TX
text:
Based on 405+-25 pb**-1 of data. Result is for mass(t) = 175 GeV. The last error is for luminosity. Secondary vertex b-tag and neural network are used to separate the signal events from the background.


pdgid: Q007TX
text:
Based on ~ 425 pb**-1. Assuming mass(t) = 175 GeV. The first error is combined statistical and systematic, the second one is luminosity.


pdgid: Q007TX
text:
Based on ~318 pb**-1. Assuming mass(t) = 178 GeV. The cross section changes by +-0.08 pb for each -+ GeV change in the assumed mass(t). Result is for at least one b-tag. For at least two b-tagged jets, t tbar signal of significance greater than 5sigma  is found, and the cross section is 10.1+1.6-1.4+2.0-1.3 pb for mass(t) = 178 GeV.


pdgid: Q007TX
text:
Based on ~311 pb**-1. Assuming mass(t) = 178 GeV. For mass(t) = 175 GeV, the result is 6.0+-1.2+0.9-0.7. This is the first  CDF measurement without lepton identification, and hence it has sensitivity to the W --> tau nu mode.


pdgid: Q007TX
text:
ABULENCIA,A 2006E measures the t tbar production cross section in the all hadronic decay mode by selecting events with 6 to 8 jets and at least one b-jet.  S/B = 1/5 has been achieved. Based on 311 pb**-1. Assuming mass(t) = 178 GeV.


pdgid: Q007TX
text:
Based on ~318 pb**-1. Assuming mass(t) = 178 GeV. Result is for at least one b-tag. For at least two b-tagged jets, the cross section is 11.1+2.3-1.9+2.5-1.9pb.


pdgid: Q007TX
text:
ABAZOV 2005Q measures the top-quark pair production cross section with ~230 pb**-1 of data, based on the analysis of W plus n-jet events where W decays into e or mu plus neutrino, and at least one of the jets is b-jet like. The first error is statistical and systematic, and the second accounts for the luminosity uncertainty. The result assumes mass(t) = 175 GeV; the mean value changes by (175-mass(t)(GeV)) x 0.06pb in the mass range 160 to 190 GeV.


pdgid: Q007TX
text:
ABAZOV 2005R measures the top-quark pair production cross section with 224 -- 243 pb**-1 of data, based on the analysis of events with two charged leptons in the final state. The result assumes mass(t) = 175 GeV; the mean value changes by (175-mass(t)(GeV)) x 0.08pb in the mass range 160 to 190 GeV.


pdgid: Q007TX
text:
ACOSTA 2005V measures the top-quark pair production cross section with ~162 pb**-1 data, based on the analysis of W plus n-jet events where W decays into e or mu plus neutrino, and at least one of the jets is b-jet like. Assumes mass(t) = 175 GeV.


pdgid: Q007TX
text:
ACOSTA 2004I measures the top-quark pair production cross section with 197+-12 pb**-1 data, based on the analysis of events with two charged leptons in the final state. Assumes mass(t) = 175 GeV.


pdgid: Q007TTA
text:
Based on 6.0 fb**-1 of data. The error is statistical and systematic combined. Events with lepton + notET + >=3 jets(>=1b) with and without central, high E(T) photon are measured. The result is consistent with the SM prediction of 0.024+-0.005. The absolute production cross section is measured to be 0.18+-0.08 fb. The statistical significance is 3.0 standard deviations.


pdgid: Q007TP7
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. The upper bounds are the same for LL, LR and RR chiral components of the two top quarks.


pdgid: Q007TX5
text:
AAD 2023J based on 257 pb**-1 of data from p p collisions. The second error is the   sum of systematics (+-2.3), luminosity(+-1.1) and beam energy (+-0.2)  uncertainties.  The result agrees with the NNLO+NNLL  SM prediction of  68.2+5.2-5.3 pb.


pdgid: Q007TX5
text:
TUMASYAN 2022T based on 302 pb**-1 of data from p p collisions at sqrt(s) = 5.02 TeV.  The errors are from statistics, systematics and luminosity.


pdgid: Q007TX5
text:
Combination of the measurement by TUMASYAN 2022T and the measurement in the lepton+jets  channel by SIRUNYAN 2018AQ. The errors are from statistics and systematics + luminosity. The  result is in agreement with the NNLO+NNLL SM prediction 66.8+2.9-3.1 pb.


pdgid: Q007TX5
text:
SIRUNYAN 2018AQ based on 27.4 pb**-1 of data from p p collisions at sqrt(s) = 5.02  TeV. The result is in agreement with the NNLO SM prediction  68.9+1.9-2.3(scale)+-2.3(PDF)+1.4(alpha_{{s}}) pb.


pdgid: Q007TX7
text:
AABOUD 2023 based on 4.6 fb**-1 of data. The measurement is performed using a  multi-variate event classifier based on a binary learning algorithm which differentiates t tbar  events from backgrounds in a three-dimensional space. The result is in agreement with the NNLO+NNLL  SM prediction of 177+5-6(scale)+-9(PDF+alpha(s)) pb for mass(t) = 172.5 GeV.   Compared to the measured cross section using the dilepton mode of AAD 2014AY, significance of  discrepancy is between 1.9sigma to 2.1sigma.


pdgid: Q007TX7
text:
AAD 2023AY based on 5 fb**-1 of data using mass(t) = 172.5 GeV.  The ratio of the   combined  cross   section at sqrt(s) = 8 TeV to this one at sqrt(s) = 7 TeV is determined as  1.363+-0.032. The values  of the  cross  sections as well as the ratio are consistent with   the NNLO+NNLL SM predictions.


pdgid: Q007TX7
text:
KHACHATRYAN 2017B based on 5.0 fb**-1 of data, using a binned likelihood fit of templates  to the data. Also the ratio CS(t tbar; 8 TeV)/CS(t tbar; 7 TeV) = 1.43+-0.04+-0.07+-0.05 is  reported. The results are in agreement with NNLO SM predictions.


pdgid: Q007TX7
text:
KHACHATRYAN 2016AW based on 5.0 fb**-1 of data, using a binned likelihood fit to  differential distributions of b-tagged and non-b-tagged jets. The result is in good  agreement with NNLO SM predictions.


pdgid: Q007TX7
text:
Based on 4.6 fb**-1 of data. Uses a template fit to distributions of notET and jet  multiplicities to measure simultaneously t tbar, W W, and Z/gamma^* --> tau tau  cross sections, assuming mass(t) = 172.5 GeV.


pdgid: Q007TX7
text:
AAD 2015CC based on 4.6 fb**-1 of data. The event selection criteria are optimized for  the lepton tau_h + jets channel. Using only this channel 183+-9+-23+-3 pb is derived for  the cross section.


pdgid: Q007TX7
text:
AAIJ 2015R, based on 1.0 fb**-1 of data, reports 0.239+-0.053+-0.033+-0.024 pb  cross section for the forward fiducial region p_{{T}}(mu) > 25 GeV, 2.0 <  eta(mu) < 4.5, 50 GeV < p_T(b) < 100 GeV, 2.2 <  eta(b) < 4.2, DeltaR(mu,b) > 0.5, and p_{{T}}(mu+b) > 20 GeV. The three errors are from statistics, systematics, and  theory. The result agrees with the SM NLO prediction.


pdgid: Q007TX7
text:
AAD 2014AY reports 182.9+-3.1+-4.2+-3.6+-3.3 pb value based on 4.6 fb**-1 of data. The four errors are from statistics, systematic, luminosity, and the 0.66% beam energy uncertainty. We have combined the systematic uncertainties in quadrature. The result is for mass(t) = 172.5GeV; for other mass(t), CS(mass(t)) = sigma(172.5GeV)*[1-0.0028*(mass(t)-172.5GeV)]. The result is consistent with the SM prediction at NNLO.


pdgid: Q007TX7
text:
Based on 0.70 fb**-1 of data. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for mass(t) = 172.5 GeV.


pdgid: Q007TX7
text:
Based on 35 pb**-1 of data. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for mass(t) = 172.5 GeV and 173+-17+18-16+-6 pb is found without the b-tag.


pdgid: Q007TX7
text:
Based on 2.05 fb**-1 of data. The hadronic tau candidates are selected using a BDT technique. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for mass(t) = 172.5 GeV.


pdgid: Q007TX7
text:
Based on 2.0 fb**-1 and 2.2 fb**-1 of data for lepton = e and lepton = mu, respectively. The 3 errors are from statistics, systematics, and luminosity. The result uses the acceptance for mass(t) = 172.5 GeV.


pdgid: Q007TX7
text:
Based on 2.3 fb**-1 of data. The 3 errors are from statistics, systematics, and luminosity. The result uses the profile likelihood-ratio (PLB) method and an assumed mass(t) of 172.5 GeV.


pdgid: Q007TX7
text:
Based on 2.9 pb**-1 of data. The result for single lepton channels is 142+-34+50-31 pb, while for the dilepton channels is 151+78-62+37-24 pb.


pdgid: Q007TX7
text:
Result is based on 36 pb**-1 of data. The first uncertainty corresponds to the statistical  and systematic uncertainties, and the second corresponds to the luminosity.


pdgid: Q007TX7
text:
Based on 36 pb**-1 of data. The ratio of t tbar and Z/gamma^*() cross sections is measured as CS(p p --> t tbar)/CS(p p --> Z/gamma^*() --> e+ e-/mu+ mu-) = 0.175+-0.018(stat)+-0.015(syst) for 60 < mass(lepton lepton)< 120 GeV, for which they use an NNLO prediction for the denominator cross section of 972+-42 pb.


pdgid: Q007TX7
text:
Result is based on 36 pb**-1 of data. The first error is from statistical and systematic uncertainties, and the second from luminosity. This is a combination of a measurement in the dilepton channel (CHATRCHYAN 2011F) and the measurement in the lepton + jets channel (CHATRCHYAN 2011Z) which yields 150+-9+-17+-6 pb.


pdgid: Q007TX8
text:
AAD 2023AY based on 20 fb**-1 of data using mass(t) = 172.5 GeV. The ratio of this cross  section at sqrt(s) = 8 TeV to the combined cross section at sqrt(s) = 7 TeV is determined as  1.363+-0.032. The  values of cross  sections as well as their ratio are consistent with the  NNLO+NNLL SM predictions.


pdgid: Q007TX8
text:
AABOUD 2018BH based on 20.2 fb**-1 of data. The result is for mass(t) = 172.5 GeV. To  reduce effects of uncertainties in the jet energy scale and b-tagging efficiency, they are  included as nuisance parameters in the fit of discriminant distributions, after separating selected  events into three regions. Furthermore the W+jets background distribution is modelled using  Z+jets event data.


pdgid: Q007TX8
text:
AABOUD 2017Z based on 20.2 fb**-1 of data, using the mode  t tbar --> tau nu q^' qbar b bbar  with tau decaying hadronically. Single prong and 3 prong decays of tau are separately  analyzed. The result is consistent with the SM. The third quoted uncertainty is due to luminosity.


pdgid: Q007TX8
text:
KHACHATRYAN 2017B based on 19.6 fb**-1 of data, using a binned likelihood fit of  templates to the data.  Also the ratio CS(t tbar; 8 TeV)/CS(t tbar; 7 TeV) = 1.43+-0.04+-0.07+-0.05 is  reported. The results are in agreement with NNLO SM predictions.


pdgid: Q007TX8
text:
AAD 2016BK is an update of the value from AAD 2014AY using the improved luminosity  calibration. The value 242.9+-1.7+-5.5+-5.1+-4.2 pb is reported, where we have combined the  systematic uncertainties in quadrature. Also the ratio CS(t tbar; 8TeV)/CS(t tbar; 7TeV)  = 1.328+-0.024+-0.015+-0.038+-0.001 has been updated. The former result is consistent with  the SM predictions at NNLO, while the latter result is 2.1 sigma below the expectation.


pdgid: Q007TX8
text:
KHACHATRYAN 2016AW based on 19.7 fb**-1 of data, using a binned likelihood fit to  differential distributions of b-tagged and non-b-tagged jets. The result is in good  agreement with NNLO SM predictions.


pdgid: Q007TX8
text:
KHACHATRYAN 2016BC based on 18.4 fb**-1 of data. The last uncertainty is due to  luminosity. Cuts on kinematical fit probability and DeltaR(b,b) are imposed. The  major QCD background is determined from the data. The result is for mass(t) = 172.5 GeV and in  agreement with the SM prediction. The top quark p_{{T}} spectra, also measured, are significantly  softer than theoretical predictions.


pdgid: Q007TX8
text:
AAD 2015BP based on 20.3 fb**-1 of data. The result is for mass(t) = 172.5 GeV and in  agreement with the SM prediction 253+13-15 pb at NNLO+NNLL. Superseded by AABOUD 2018BH.


pdgid: Q007TX8
text:
AAIJ 2015R, based on 2.0 fb**-1 of data, reports 0.289+-0.043+-0.040+-0.029 pb  cross section for the forward fiducial region p_T(mu) > 25 GeV, 2.0 <  eta(mu) < 4.5, 50 GeV < p_T(b) < 100 GeV, 2.2 <  eta(b) < 4.2, DeltaR(mu,b) > 0.5, and p_T(mu+b)  > 20 GeV. The three errors are from statistics, systematics, and theory. The result agrees  with the SM NLO prediction.


pdgid: Q007TX8
text:
AAD 2014AY reports 242.4+-1.7+-5.5+-7.5+-4.2 pb value based on 20.3 fb**-1 of data. The four errors are from statistics, systematic, luminosity, and the 0.66% beam energy uncertainty. We have combined the systematic uncertainties in quadrature. The result is for mass(t) = 172.5GeV; for other mass(t), CS(mass(t)) = CS(172.5GeV)*[1-0.0028*(mass(t)-172.5GeV)]. Also measured is the ratio CS(t tbar; 8TeV)/CS(t tbar; 7TeV) = 1.326+-0.024+-0.015+-0.049+-0.001.  The results are consistent with the SM predictions at NNLO.


pdgid: Q007TX8
text:
Based on 5.3 fb**-1 of data. The result is for mass(t) =  172.5 GeV, and a parametrization is given in eq.(6.1) for the mean value at other mass(t) values. The result is in agreement with the SM prediction 252.9+6.4-8.6 pb at NNLO.


pdgid: Q007TX8
text:
Based on 19.6 fb**-1 of data. The measurement is in the channel t tbar --> (b lepton nu) (b tau nu), where tau decays into hadrons (tau_{{h}}). The result is for mass(t) = 172.5 GeV.  For mass(t) = 173.3 GeV, the cross section is lower by 3.1 pb.


pdgid: Q007X13
text:
AAD 2023S based on 140 fb**-1 of data at 13 TeV. The second error is the sum of   systematic effects (+-13), luminosity (+-8),  and beam energy (+-2)  uncertainties.  This measurement supersedes that of  AAD 2020Q. The result is in  good agreement with the  NNLO+NNLL SM prediction.


pdgid: Q007X13
text:
TUMASYAN 2021J result is based on 137 fb**-1 of data. The last uncertainty is due to the  beam luminosity. The result is in agreement with the SM prediction of 832+40-46 pb at  NNLO+NNLL. Measurements of differential and double-differential cross sections are also presented.


pdgid: Q007X13
text:
AAD 2020AH based on 139 fb**-1 of data.  The last quoted uncertainty is due to the beam  luminosity. The result is for mass(t) = 172.5 GeV and in agreement with the SM prediction of  832+20-29(scale)+-35(PDF+alpha(s)) pb at NNLO+NNLL.


pdgid: Q007X13
text:
AAD 2020Q reports 826.4+-3.6+-11.5+-15.7+-1.9 pb based on 36.1 fb**-1 of data at  13 TeV. The four errors stem from statistics, systematic effects, luminosity, and beam energy,  respectively. We have combined luminosity and beam energy uncertainties in quadrature. The result  is in agreement with the SM prediction 832+20-29(scale)+-35(PDF+alpha(s)) pb at NNLO+NNLL  for mass(t) = 172.5 GeV .


pdgid: Q007X13
text:
SIRUNYAN 2020V based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. The last  uncertainty is due to beam luminosity. The t tbar production cross section is measured in the  t tbar --> (lepton nu_lepton) (tau_h nu_tau) b bbar  final state, where tau_{{h}} refers to the  hadronic decays of tau. The result is for mass(t) = 172.5 GeV and in agreement with the SM  prediction at NNLO+NNLL.


pdgid: Q007X13
text:
SIRUNYAN 2019AR based on 35.9 fb**-1 of data. Obtained from the visible cross section  measured using a template fit to multidifferential distributions categorized according to the  b-tagged jet multiplicity. The result is for mass(t) = 172.5 GeV and in agreement with the SM  prediction at NNLO+NNLL.


pdgid: Q007X13
text:
SIRUNYAN 2019P reports differential t tbar cross sections measured using dilepton events  at 13 TeV with 35.9 fb**-1 and compared to NLO predictions.


pdgid: Q007X13
text:
KHACHATRYAN 2017N based on 2.2 fb**-1 of data. The last quoted uncertainty is due to the beam luminosity. This measurement supersedes that of  KHACHATRYAN 2016J.


pdgid: Q007X13
text:
SIRUNYAN 2017W based on 2.2 fb**-1 of p p data at sqrt(s) = 13 TeV. Events are  categorized according to the jet multiplicity and the number of b-tagged jets. A likelihood fit  is performed to the event distributions to compare to the NNLO+NNLL prediction.


pdgid: Q007X13
text:
AABOUD 2016R reported value 818+-8+-27+-19+-12 pb based on 3.2 fb**-1 of data. The  four errors are from statistics, systematic, luminosity, and beam energy. We have combined the  systematic uncertainties in quadrature. The result is in agreement with the SM prediction 832+20-29(scale)+-35(PDF+alpha(s)) pb  at NNLO+NNLL for mass(t) = 172.5 GeV .


pdgid: Q007X13
text:
KHACHATRYAN 2016J based on 43 pb**-1 of data. The last uncertainty is due to luminosity.  The result is for mass(t) = 172.5 GeV and in agreement with the SM prediction 832+20-29(scale)+-35(PDF+alpha(s)) pb at  NNLO+NNLL.


pdgid: Q007Y13
text:
AAD 2024 based on 29 fb**-1 of data. The last error includes the luminosity uncertainty  of +-20 pb. The result is for mass(t) = 172.5 GeV and in agreement with the SM prediction of  924+32-40 (scale+PDF+alpha(s)) pb. The ratio of the t tbar to the Z  production cross section is also measured as 1.145+-0.003+-0.021+-0.002, which is consistent  with the SM prediction of 1.238+0.063-0.071 (scale+PDF+alpha(s)). The uncertainties  of luminosity and lepton efficiency largely cancel in the ratio.


pdgid: Q007Y13
text:
AAD 2024BC based on 29 fb**-1 of data. The same data sample as AAD 2024 is used to  measure the ratios of the t tbar to the W+-, W+ and W- production cross sections.


pdgid: Q007NP1
text:
AAD 2024CC based on 165 nb**-1 of proton-lead collision data at a nucleon-nucleon c.m.  energy of 8.16 TeV. Top quark pair production is observed with more than 5sigma  significance in each mode. The nuclear modification factor is measured to be  R(p A) = 1.090+-0.039(stat)+0.094(syst). The results agree with  theory predictions.


pdgid: Q007NP1
text:
SIRUNYAN 2017CQ based on 174 nb**-1 of proton-lead collision data at a nucleon-nucleon  c.m. energy of 8.16 TeV. Top quark pair production is observed with more than 5sigma  significance. The measured cross section is consistent with the expectation from the scaled p p  data as well as perturbative QCD calculations.


pdgid: Q007NN1
text:
SIRUNYAN 2020BC based on (1.7+-0.1) nb**-1 of lead-lead collision data at a  nucleon-nucleon c.m. energy of 5.02 TeV. It makes use of the final-state dilepton kinematic  properties together with requirements on the number of b-jets. The measured value is compatible  with QCD predictions.


pdgid: Q007NN1
text:
SIRUNYAN 2020BC based on (1.7+-0.1) nb**-1 of lead-lead collision data at a  nucleon-nucleon c.m. energy of 5.02 TeV. It makes use of the final-state dilepton kinematic  properties alone. The measured value is compatible with QCD predictions.


pdgid: Q007DT8
text:
AAD 2015AR based on 20.3 fb**-1 of data. A fit to H_T distributions in multi-channels  classified by the number of jets and of b-tagged jets is performed.


pdgid: Q007DT8
text:
AAD 2015BY based on 20.3 fb**-1 of data. A same-sign lepton pair is required. An excess  over the SM prediction reaches 2.5sigma for hypotheses involving heavy resonances decaying into   t tbar t tbar.


pdgid: Q007DT8
text:
Based on 19.6 fb**-1 of data, using a multivariate analysis to separate signal from backgrounds. About CS(t tbar t tbar) = 1 fb is expected in the SM.


pdgid: Q007D13
text:
AAD 2023BC result is based on 140 fb**-1 of data. The result corresponds to observed  significance of 6.1 sigma.


pdgid: Q007D13
text:
HAYRAPETYAN 2023B based on 138 fb**-1 of data. Improvements include the identification of  leptons and jets from b hadrons, and from the revised analysis strategy for the  signal-background separation by application of machine learning techniques. The result corresponds  to the observed significance of 5.6 sigma and is in agreement with the NLO (QCD+EW) SM  prediction of 13.4+1.0-1.8 fb including soft-gluon emission corrections at the next-to-leading  logarithmic accuracy.


pdgid: Q007D13
text:
TUMASYAN 2023AQ based on up to 138 fb**-1 of data. The all-hadronic final state is  included for the first time.


pdgid: Q007D13
text:
TUMASYAN 2023AQ based on up to 138 fb**-1 of data. It combines earlier CMS results,  giving the  observed significance of 4.0sigma.


pdgid: Q007D13
text:
AAD 2021BC result is based on 139 fb**-1 of data. The events are categorized according to  the number of jets and how likely to contain b-hadrons and a multivariate analysis is used to  discriminate the signal from backgrounds. The result corresponds to observed significance of 1.9  sigma.


pdgid: Q007D13
text:
AAD 2021BC combines the results of the four-top-quark production cross section measured from  the 1lepton/opposite-sign 2lepton channel with that from the same-sign  2lepton/3lepton channel (AAD 2020AR). The result corresponds to observed significance  of 4.7 sigma and is consistent within 2.0 sigma with the NLO (QCD+EW) SM prediction  of 12.0+-2.4 fb.


pdgid: Q007D13
text:
AAD 2020AR based on 139 fb**-1 of data. Jet multiplicity, jet flavor and event kinematics  are used in a multivariate analysis to discriminate the signal from backgrounds. The result  corresponds to observed significance of 4.3sigma and is consistent within 1.7sigma  with the NLO (QCD+EW) SM prediction of 12.0+-2.4 fb.


pdgid: Q007D13
text:
SIRUNYAN 2020C based on 137 fb**-1 of data. Both cut-based and multivariate approaches  are taken to discriminate the signal from backgrounds. The result is in agreement with the NLO  (QCD+EW) SM prediction of 12.0+2.2-2.5 fb. The measurement constrains the top quark Yukawa  coupling strength parameter to be |Y_{{t}}/Y_{{t}}^SM| < 1.7 (95% CL). It is also  used to constrain an oblique parameter of the Higgs boson. Superseded by HAYRAPETYAN 2023B.


pdgid: Q007D13
text:
AABOUD 2019AP based on 36.1 fb**-1 of data. The upper limit corresponds to 5.1 times the  NLO SM cross section.


pdgid: Q007D13
text:
AABOUD 2019AP limit from data combined with AABOUD 2018CE. The upper limit corresponds  to 5.3 times the NLO SM cross section. Also a limit on the four-top-quark contact interaction of  |C(4t)|/Lambda**2 < 1.9 TeV**-2 (95% CL) is obtained  in an EFT model.


pdgid: Q007D13
text:
SIRUNYAN 2019CN based on 35.8 fb**-1 of data, combined with SIRUNYAN 2018BU. The  results are also interpreted in the effective field theory framework.


pdgid: Q007D13
text:
SIRUNYAN 2019CN based on 35.8 fb**-1 of data. A multivariate analysis using global event  and jet propoerties is performed to discriminate from t tbar background.


pdgid: Q007D13
text:
AABOUD 2018CE based on 36.1 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV.  Events including a same-sign lepton pair are used. The result is consistent with the NLO SM cross section of 9.2 fb.


pdgid: Q007D13
text:
SIRUNYAN 2018BU based on 35.9 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV.  Yields from signal regions and control regions defined based on N_{{jets}}, N_{{b}} and N_{{l}} are  combined in a maximum-likelihood fit. The result is in agreement with the NLO SM prediction 9.2+2.9-2.4  fb. The measurement constrains the top quark Yukawa coupling strength parameter to be  |Y(t)/Y(t)**SM| < 2.1 (95% CL).


pdgid: Q007D13
text:
SIRUNYAN 2017AB based on 2.6 fb**-1 of data. A multivariate analysis is used to  discriminate between t tbar t tbar signal and  t tbar background. A combination with a  previous search (CMS, KHACHATRYAN 2016BJ) in the same-sign dilepton channel gives an upper  limit of 69 fb (95% CL), corresponding to 7.4.(SM prediction).


pdgid: Q007D13
text:
SIRUNYAN 2017S based on 35.9 fb**-1. The limit is in agreement with the NLO SM prediction  9.2+2.9-2.4 fb. Superseded by SIRUNYAN 2018BU. The signal events are also used to  constrain various new physics models.


pdgid: Q007TW8
text:
Based on 19.5 fb**-1 of data. The result is consistent with the SM prediction of  CS(t tbar W) = 206+21-23 fb.


pdgid: Q007TWX
text:
AAD 2024AI result is based on 140 fb**-1 of data. The result is consistent with the SM  prediction 0.745+-0.050(scale)+-0.013(two loop approx.)+-0.019(PDF alpha(S)) pb. The  inclusive relative charge asymmetry of t tbar W+ and t tbar W- is measured to be  0.33+-0.05 in agreement with the SM prediction of 0.322+-0.003(scale)+-0.007(PDF).


pdgid: Q007TWX
text:
TUMASYAN 2023AN result is based on 138 fb**-1 of proton-proton data. The t tbar W+   and t tbar W- production cross   sections, respectively, are measured as   0.553+-0.030+-0.030 pb and 0.343+-0.026+-0.025 pb.   The results are within 2sigma   deviations from the NLO FxFx SM predictions,   0.592+0.155-0.097 pb (t tbar W),   0.384+0.053-0.033 pb (t tbar W+) and   0.198+0.026-0.017 pb (t tbar W-).


pdgid: Q007TWX
text:
AABOUD 2019AR result is based on 35.9 fb**-1 of data. t tbar W and t tbar Z cross sections  are simultaneously measured using a combined fit to the events divided into multiple regions. The  result is consistent with the SM prediction at NLO 0.60+0.08-0.07 pb. It is also used to  constrain the Wilson coefficients for dimension-six operators which modify the t tbar Z vertex.


pdgid: Q007TWX
text:
SIRUNYAN 2018BS result is based on 35.9 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV. The result is consistent  with the SM prediction and is used to constrain the Wilson coefficients for dimension-six operators  describing new interactions. The result is consistent with the SM prediction at NLO 0.628+-0.082 pb.


pdgid: Q007TZ8
text:
Based on 19.5 fb**-1 of data. The result is consistent with the SM prediction of CS(t tbar Z) = 197+22-25 fb.


pdgid: Q007TZX
text:
AAD 2024AN based on 140 fb**-1 of data. The result is consistent with the NLO+NNLL SM  prediction including EW corrections of 0.863+0.073-0.085(scale)+-0.028(PDF +  alpha_{{s}}) pb. Also overall the differential cross sections are in good agreement with the SM  predictions. All hadronic decays of t tbar are also included.


pdgid: Q007TZX
text:
AAD 2021AS based on 139 fb**-1 of data. The result is consistent with the SM  prediction  of 0.88+0.09-0.10 pb which includes NLO QCD+EW corrections. Also overall the  differential  cross sections are in good agreement with the SM predictions.


pdgid: Q007TZX
text:
SIRUNYAN 2020AB based on 77.5 fb**-1 of data at 13 TeV. The result is consistent with the  NLO SM prediction of 0.84+-0.10 pb. Differential cross sections are measured and used to  constrain the anomalous couplings and Wilson coefficients for the t tbar Z interaction.


pdgid: Q007TZX
text:
AABOUD 2019AR based on 35.9 fb**-1 of data. t tbar W and t tbar Z cross sections  are simultaneously measured using a combined fit to the events divided into multiple regions. The  result is consistent with the SM prediction at NLO 0.88+0.09-0.11 pb. It is also used to  constrain the Wilson coefficients for dimension-six operators which modify the t tbar Z vertex.


pdgid: Q007TZX
text:
Based on 35.9 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV. The result is consistent  with the SM prediction and is used to constrain the Wilson coefficients for dimension-six operators  describing new interactions. The result is consistent with the SM prediction at NLO 0.839+-0.101 pb.


pdgid: Q007A01
text:
AAD 2024BY measured fiducial inclusive and differential cross-sections for p p --> t tbar gamma at  13 TeV with 140 fb**-1 of data. The results are in agreement with the SM predictions. The  results are used to constrain anomalous couplings of the top quark in the SMEFT framework.


pdgid: Q007A01
text:
TUMASYAN 2022W measured fiducial inclusive and differential cross-sections for p p --> t tbar gamma  at 13 TeV with 138 fb**-1 of data. The results are in agreement with the SM predictions. The  results are used to constrain anomalous couplings of the top quark in the SMEFT framework.


pdgid: Q007A01
text:
TUMASYAN 2021H measured fiducial inclusive and differential cross-sections for p p --> t tbar gamma  at 13 TeV with 137 fb**-1 of data. The results are in agreement with the SM predictions. The  results are used to constrain anomalous couplings of the top quark in the SMEFT framework.


pdgid: Q007A01
text:
AABOUD 2019AD measured fiducial inclusive and  differential cross-sections for p p --> t tbar gamma  at 13 TeV with 36.1 fb**-1 of data. The results are in agreement with the theoretical  predictions.


pdgid: Q007FQ7
text:
CHATRCHYAN 2015 based on 5.0 fb**-1 of data. The t tbar events are selected in the dilepton and lepton + jets decay channels. For other values of Q(0) see Table 5.


pdgid: Q007FQ7
text:
Based on 2.05 fb**-1 of data. The t tbar events are selected in the dilepton decay channel with two identified b-jets.


pdgid: Q007TJ7
text:
Based on 4.6 fb**-1 of data. Fiducial t tbar production cross section is presented as a function of the jet multiplicity for up to eight jets with the jet p_T threshold of 25, 40, 60, and 80 GeV, and as a function of jet p_T up to the 5th jet. MC models can be discriminated by  using data for high jet multiplicity and by p_T distributions of the leading and 5th jet.


pdgid: Q007TJ7
text:
Based on 5.0 fb**-1 of data. Events with two oppositely charged leptons, large notET and jets with at least 1 b-tag are used to measure the fraction of t tbar plus additional jets. The gap fraction (n=0 jet rate) as a function of the jet p_{{T}} and that of H_{{T}}, the scalar sum of the p_{{T}}'s of additional jets, is shown in Fig. 8.


pdgid: Q007AC7
text:
ATLAS and CMS combination based on the data of AAD 2014I and CHATRCHYAN 2012BB. It  takes into account the correlations of the measurements and systematic errors.  The result is in  agreement with the SM prediction (NLO QCD + NLO EW).


pdgid: Q007AC7
text:
AAD 2015AJ based on 4.6 fb**-1 of data. After kinematic reconstruction the top quark  momenta are corrected for detector resolution and acceptance effects by unfolding, using parton  level information of the MC generators. The lepton charge asymmetry is measured as  A(C)**lepton = 0.024+-0.015+-0.009. All the  measurements are consistent with the  SM predictions.


pdgid: Q007AC7
text:
Based on 4.7 fb**-1 of data. The result is consistent with the SM prediction of A(C) = 0.0123+-0.0005. The asymmetry is 0.011+-0.018 if restricted to those events where beta(Z)(t tbar) > 0.6, which is also consistent with the SM prediction of 0.020+0.006-0.007.


pdgid: Q007AC7
text:
Based on 5.0 fb**-1 of data. The lepton charge asymmetry is measured as A(C)**lepton = 0.009+-0.0010+-0.006. A(C)**lepton dependences on mass(t tbar), |y(t tbar)|, and p_{{T}}(t tbar) are given in Fig. 5. All measurements are consistent with the SM predictions.


pdgid: Q007AC7
text:
Based on 1.04 fb**-1 of data. The result is consistent with A(C) = 0.006+-0.002 (MC at NLO). No significant dependence of A(C) on mass(t tbar) is observed.


pdgid: Q007AC8
text:
ATLAS and CMS combination based on the data of AAD 2016AZ and KHACHATRYAN 2016AH. It  takes into account the correlations of the measurements and systematic errors. A combination of the  differential measurements of the charge asymmetry is also presented. The results are in agreement  with the SM prediction (NNLO QCD + NLO EW).


pdgid: Q007AC8
text:
AAD 2016AE is based on 20.3 fb**-1 of data. After kinematic reconstruction, the top quark  momenta are corrected for detector resolution and acceptance effects by unfolding, using parton  level information of the MC generators. The lepton charge asymmetry is measured as  A(C)**lepton lepton = 0.008+-0.006. All the measurements are consistent with the SM  predictions.


pdgid: Q007AC8
text:
AAD 2016AZ based on 20.3 fb**-1 of data. All the differential and inclusive measurements  are statistically limited and consistent with the SM predictions.


pdgid: Q007AC8
text:
AAD 2016T based on 20.3 fb**-1 of data. Uses reconstruction techniques for the decay  topology of highly boosted top quarks. The observed asymmetry is transformed by unfolding to a  parton-level result in the shown fiducial region. The result is consistent with the NLO SM  prediction.


pdgid: Q007AC8
text:
KHACHATRYAN 2016AD based on 19.5 fb**-1 of data. The lepton charge asymmetry is measured  as A(C)**lepton lepton = 0.003+-0.006+-0.003. All the measurements are consistent  with the SM predictions.


pdgid: Q007AC8
text:
KHACHATRYAN 2016AH based on 19.6 fb**-1 of data. The same data set as in KHACHATRYAN 2016T is  used. A template technique is used, which is sensitive to the charge anti-symmetric component of  the t tbar rapidity distributions and statistically advantageous. The result is consistent with  the SM predictions.


pdgid: Q007AC8
text:
KHACHATRYAN 2016T based on 19.7 fb**-1 of data. The same data set as in KHACHATRYAN 2016AH is  used. After kinematic reconstruction the top quark momenta are corrected for detector resolution  and acceptance effects by unfolding, using parton level information of the MC generators. All the  measurements are consistent with the SM predictions.


pdgid: Q007ACX
text:
AAD 2023BA is based on 139 fb**-1 of data. Inclusive t tbar charge asymmetry is   measured to  be nonzero with 4.7sigma significance. Also differential t tbar as well     as lepton    charge asymmetries are measured. All the results are consistent with the SM   predictions which   include  NNLO QCD +  NLO EW  corrections.


pdgid: Q007ACX
text:
TUMASYAN 2023BD is based on 138 fb**-1 of data. t tbar charge asymmetry for highly  Lorentz-boosted top quarks is measured and is in agreement with the NNLO QCD + NLO EW corrected SM  prediction of 0.94+0.05-0.07%. The event selection is optimized for highly-boosted top  quarks.


pdgid: Q007A06
text:
AAD 2023AA is based on 139 fb**-1 of data. The charge-asymmetry in a fiducial volume at   particle level is also reported at -0.11+-0.17+-0.05. All the results are consistent with  the  SM predictions which include NLO QCD + NLO EW corrections.


pdgid: Q007A07
text:
AAD 2023AW is based on 139 fb**-1 of data. The measurement is in agreement with the  Standard Model expectation.


pdgid: Q007PL2
text:
ABAZOV 2017 based on 9.7 fb**-1 of data. The value is top quark polarization times spin  analyzing power in the beam basis. Combination with the result of ABAZOV 2015K yields  0.081+-0.048. This result together with the helicity polarization is shown in a 2-dimensional  plot in Fig.4. These results are consistent with the SM prediction.


pdgid: Q007PL2
text:
ABAZOV 2017 based on 9.7 fb**-1 of data. The value is top quark polarization times spin  analyzing power in the helicity basis. The result is consistent with the SM prediction. This result  together with the beam polarization is shown in a 2-dimensional plot in Fig.4.


pdgid: Q007PL2
text:
ABAZOV 2017 based on 9.7 fb**-1 of data. The value is top quark polarization times spin  analyzing power in the transverse basis. The result is consistent with the SM prediction.


pdgid: Q007PL2
text:
ABAZOV 2015K based on 9.7 fb**-1 of data. The value is top quark polarization times spin  analyzing power in the beam basis. The result is consistent with the SM prediction of -0.0019+-0.0005.


pdgid: Q007PL7
text:
Based on 4.7 fb**-1 of data using the final states containing one or two isolated electrons or muons and jets with at least one b-tag.


pdgid: Q007PL8
text:
AABOUD 2017G based on 20.2 fb**-1 of p p data, using events with two leptons and two  or more jets with at least one b-tag. Determined from measurements of 15 top quark spin  observables. The second error corresponds to a variation of mass(t) about 172.5 GeV by 0.7 GeV.  The values are consistent with the NLO SM predictions.


pdgid: Q007PL8
text:
KHACHATRYAN 2016AI based on 19.5 fb**-1 of p p data at sqrt(s) = 8 TeV, using events  with two leptons and two or more jets with at least one b-tag. Determined from the lepton  angular distributions as a function of the t tbar-system kinematical variables.


pdgid: Q007A00
text:
AABOUD 2017BB based on 20.2 fb**-1 of p p data. Triple-differential decay rate of top  quark is used to simultaneously determine five generalized W t b couplings as well as the top  polarization. alpha_{{{{mathit ell}}}} denotes the spin analyzing power of charged lepton, and the spin  axis of the top polarization P is taken along the spectator-quark momentum in the top rest  frame. The value is compatible with the SM prediction of about 0.9.


pdgid: Q007A00
text:
AABOUD 2017I based on 20.2 fb**-1 of p p data. A cut-based analysis is used to  discriminate between signal and backgrounds. alpha(lepton) denotes the spin  analyzing power of charged lepton, and the spin axis of the top polarization P is taken  along the spectator-quark momentum in the top rest frame. See this paper for a number of other  asymmetries and measurements that are not included here.


pdgid: Q007A00
text:
AABOUD 2017I based on 20.2 fb**-1 of p p data. A cut-based analysis is used to  discriminate between signal and backgrounds. F(+-) denotes W helicity  fraction, and the spin axis of the top polarization P is taken along the spectator-quark  momentum in the top rest frame. See this paper for a number of other asymmetries and measurements  that are not included here.


pdgid: Q007A00
text:
KHACHATRYAN 2016BO based on 19.7 fb**-1 of data. A high-purity sample with a muon is  selected by a multivariate analysis. The value is the top spin asymmetry, given by one half of the  spin analyzing power alpha(mu) (=1 at LO of SM) times the top polarization,  P, where the spin axis is defined as the direction of the untagged jet in the top rest  frame. The value is compatible with the SM prediction of 0.44 with a 2.0sigma deviation.


pdgid: Q007A04
text:
AAD 2022Z based on 139 fb**-1 of data. Three components of t or tbar polarization  vector (defined in the t or tbar rest frame) are measured in t-channel single top  production using lepton momentum distribution in the lepton + notET + 2j (with 1 of  them b-jet) channel. The measured values are in agreement with NNLO SM prediction. Constraints  on the Wilson coefficients of SMEFT are obtained as -0.9 < C_{{tW}} < 1.4 and -0.8  < C_{{itW}} < 0.2.


pdgid: Q007A04
text:
SIRUNYAN 2020R based on 36.1 fb**-1 of data. Differential cross sections for  t-channel single top production are measured using 1lepton + 2,3-jet mode and found to  be in good agreement with SM predictions. The value is the top spin asymmetry, given by 1/2 of the  spin analyzing power alpha_{{{{mathit ell}}}} (=1 at LO of SM) times the top polarization P, where  the spin axis is defined as the direction of the spectator quark in the top rest frame at the  parton level. It is in good agreement with the NLO SM prediction of 0.436.


pdgid: Q007TXG
text:
Based on 955 pb**-1. AALTONEN 2009F used differences in the t tbar production angular distribution and polarization correlation to descriminate between g g --> t tbar and q qbar --> t tbar subprocesses. The combination with the result of AALTONEN 2008AG gives 0.07+0.15-0.07.


pdgid: Q007TXG
text:
Result is based on 0.96 fb**-1 of data. The contribution of the subprocesses g g --> t tbar and q qbar --> t tbar is distinguished by using the difference between quark and gluon initiated jets  in the number of small pT (0.3 GeV < pT < 3 GeV) charged particles in the central region (|eta| < 1.1).


pdgid: Q007TFB
text:
AALTONEN 2018 based on 9 -- 10 fb**-1 of p pbar data at sqrt(s) = 1.96 TeV.  The value is the asymmetry in the number of reconstructed t tbar events with rapidity y(t)  > y(tbar) and those with y(t) < y(tbar). The combined fits to CDF  and D0 single lepton and lepton lepton asymmetries give A(FB)**lepton =  0.073+-0.016+-0.012 and A(FB)**lepton lepton = 0.108+-0.043+-0.016,  respectively. The results are consistent with the SM predictions.


pdgid: Q007TFB
text:
ABAZOV 2015K based on 9.7 fb**-1 of data. The result is consistent with the SM  predictions. By combining with the previous D0 measurement in the lepton + jet channel  ABAZOV 2014H, A(FB)**lepton = 0.118+-0.025+-0.013 is obtained.


pdgid: Q007TFB
text:
AALTONEN 2014F based on 9.1 fb**-1 of data. A(FB)**lepton and  A(FB)**leptonlepton denote, respectively, the asymmetries  (N(x>0)-N(x<0))/N(tot) for  x=q(lepton)eta(lepton) (q(lepton) is the charge of  lepton) and  x=eta(lepton**+)-eta(lepton**-). Both results  are consistent with the SM predictions. By combining with the previous CDF measurement in the  lepton+jet channel AALTONEN 2013X, A(FB)**lepton = 0.098+0.028-0.026 is  obtained. The combined result is about two sigma larger than the SM prediction of  A(FB)**lepton = 0.038+-0.003.


pdgid: Q007TFB
text:
Based on 9.7 fb**-1 of p pbar data at sqrt(s) = 1.96 TeV. The  asymmetry is corrected for the production level for events with |y(l)| < 1.5.  Asymmetry as functions of E(T)(lepton) and |y(l)| are given in Figs. 7 and 8,  respectively. Combination with the asymmetry measured in the dilepton channel [ABAZOV 2013P] gives A(FB)**lepton = 4.2+-2.0+-1.4 %, in agreement with  the SM prediction of 2.0%.


pdgid: Q007TFB
text:
Based on 9.7 fb**-1 of data of p pbar data at sqrt(s)=1.96 TeV. The measured asymmetry is in agreement with the SM predictions of 8.8+-0.9 % [BERNREUTHER 2012], which includes  the EW effects. The dependences of the asymmetry on |y(t) - y(tbar)| and mass(t tbar)  are shown in Figs. 9 and 10, respectively.


pdgid: Q007TFB
text:
Based on 9.4 fb**-1 of data. Reported A_FB values come from the determination of a_{{i}}() coefficients of dsigma/d(costheta(t)) = Sigma(i) a_{{i}}P(i)(cos(theta(t))) measurement. The result of a_{{1}}()/a_{{0}}() = (40+-12)% seems higher than the NLO SM prediction of (15+7-3)%.


pdgid: Q007TFB
text:
Based on 9.4 fb**-1 of data. The observed asymmetry is to be compared with the SM prediction of A(FB)**lepton = 0.038+-0.003.


pdgid: Q007TFB
text:
Based on 5.4 fb**-1 of data. ABAZOV 2013A studied the dilepton channel of the t tbar events and measured the leptonic forward-backward asymmetry to be A(FB)**lepton = 5.8+-5.1+-1.3%, which is consistent with the SM (QCD+EW) prediction of 4.7+-0.1%. The result is obtained after combining the measurement (15.2+-4.0%) in the lepton + jets channel ABAZOV 2011AH. The top quark helicity is measured by using the neutrino weighting method to be consistent with zero in both dilepton and lepton + jets channels.


pdgid: Q007TFB
text:
Based on 5.3 fb**-1 of data. The error is statistical and systematic combined. Events with lepton + notET + >=4jets(>=1b) are used. AALTONEN 2011F also measures the asymmetry as a function of the rapidity difference |y(t) - y(tbar) |. The NLO QCD predictions [MCFM] are (4.0+-0.6)% and (8.8+-1.3)% for mass(t tbar) < 450 and > 450 GeV, respectively.


pdgid: Q007TFB
text:
Based on 5.4 fb**-1 of data. The error is statistical and systematic combined. The quoted asymmetry is obtained after unfolding to be compared with the MC@NLO prediction of (5.0+-0.1)%. No significant difference between the mass(t tbar) < 450 and > 450 GeV data samples is found. A corrected asymmetry based on the lepton from a top quark decay of (15.2+-4.0)% is measured to be compared to the MC@NLO prediction of (2.1+-0.1)%.


pdgid: Q007TFB
text:
Result is based on 1.9 fb**-1 of data. The FB asymmetry in the t tbar events has been measured in the lepton + jets mode, where the lepton charge is used as the flavor tag. The asymmetry in the p pbar frame is defined in terms of cos(theta) of hadronically decaying t-quark momentum, whereas that in the t tbar frame is defined in terms of the t and tbar rapidity difference. The results are consistent (<= 2 sigma) with the SM predictions.


pdgid: Q007TFB
text:
Result is based on 0.9 fb**-1 of data. The asymmetry in the number of t tbar events with y(t) > y(tbar) and those with y(t) < y(tbar) has been measured in the lepton + jets final state. The observed value is consistent with the SM prediction of 0.8% by MC@NLO, and an upper bound on the Z^' --> t tbar contribution for the SM Z-like couplings is given in in Fig. 2 for 350 GeV < mass(Z^') < 1 TeV.


pdgid: Q007TQ
text:
AAD 2013AY result is based on 2.05 fb**-1 of p p data at sqrt(s) = 7 TeV, the result is obtained by reconstructing t tbar events in the lepton + jets final state, where b-jet charges are tagged by the jet-charge algorithm. This measurement excludes the charge -4/3 assignment to the top quark at more than 8 standard deviations.


pdgid: Q007TQ
text:
ABAZOV 2014D result is based on 5.3 fb**-1 of p pbar data at sqrt(s)=1.96 TeV. The electric charge of b+W system in ttbar candidate events is measured from the charges of the leptons from W decay and in b jets. Under the assumption that the b+W system consists of the sum of the top quark and the charge -4/3 quark b^'(-4/3) of the same mass, the top quark fraction is found to be f = 0.88+-0.13 (stat)+-0.11 (syst), or the upper bound for the b^'(-4/3)  contamination of 1 - f <  0.46 (95%  CL).


pdgid: Q007TQ
text:
AALTONEN 2013J excludes the charge -4/3 assignment to the top quark at 99% CL, using 5.6 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. Result is obtained by reconstructing t tbar events in the lepton + jets final state, where b-jet charges are tagged by the jet-charge algorithm.


pdgid: Q007TQ
text:
AALTONEN 2010S excludes the charge -4/3 assignment for the top quark [CHANG 1999] at 95%CL, using 2.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. Result is obtained by reconstructing t tbar events in the lepton + jets final state, where b-jet charges are tagged by the SLT (soft lepton tag) algorithm.


pdgid: Q007TQ
text:
ABAZOV 2007C reports an upper limit rho< 0.80 (90% CL) on the fraction rho of exotic quark pairs Q Qbar with electric charge |q| = 4e/3 in t tbar candidate events with high pT lepton, missing E(T) and >=4 jets. The result  is obtained by measuring the fraction of events in which the quark pair decays into W- + b and  W+ + bbar, where b and bbar jets are discriminated by using the charge and momenta of tracks within the jet cones. The maximum CL at which the model of CHANG 1999 can be excluded is 92%. Based on 370 pb**-1 of data at sqrt(s) = 1.96 TeV.


pdgid: Q008BPP
text:
AAD 2024BP based on 140 fb**-1 of p p data at sqrt(s) = 13 TeV. Limit on  pair-production of heavy vectorlike quarks where each decays into a W boson and a light quark.  Used events with lepton + notET + multiple jets + 1 boosted-W-jet.


pdgid: Q008BPP
text:
HAYRAPETYAN 2024AQ based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair  production of vector-like b^' is searched for in the fully hadronic final states and those  containing lepton+ lepton- from a Z boson. The data are consistent with the SM background  predictions and limits are obtained for different branching ratios B(b^' --> H b), B(b^' --> Z b),  B(b^' --> W t).


pdgid: Q008BPP
text:
TUMASYAN 2023V based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production   of vector-like b^' is seached for in the single-lepton, same-sign charge dilepton and  multi-lepton  channels. The data are consistent with the SM background predictions and limits are  obtained for  different branching ratios.


pdgid: Q008BPP
text:
SIRUNYAN 2020BI based on 137 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production  of vector-like b^' is seached for with each b^' decaying into Z b or h b. Analysis  focuses on final states consisting of jets from six quarks. Mass limits are obtained for a variety  of branching ratios of b^' decays.


pdgid: Q008BPP
text:
AABOUD 2018CE based on 36.1 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV.  Events including a same-sign lepton pair are used. The limit is for a singlet model, assuming the branching ratios of b^' into Z b, W t  and H b as predicted by the model.


pdgid: Q008BPP
text:
AABOUD 2018CL, AABOUD 2018CP based on 36.1 fb**-1 of p p data at sqrt(s) = 13  TeV. The limit is for the pair-produced vector-like b^' using all-hadronic final state. The  analysis is particularly powerful for the b^' --> h b mode. Assuming the pure decay only in  this mode sets a limit mass(b^') > 1010 GeV.


pdgid: Q008BPP
text:
The limit is for the singlet model, assuming that the branching ratios into W t, Z b, h b add up  to one.


pdgid: Q008BPP
text:
AABOUD 2018CP based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair and single  production of vector-like b^' are seached for with at least one b^' decaying into Z b.  In the case of B(b^' --> Z b) = 1, the limit is mass(b^') > 1220 GeV.


pdgid: Q008BPP
text:
The limit is for the doublet model, assuming that the branching ratios into W t, Z b, h b add up  to one.


pdgid: Q008BPP
text:
AABOUD 2018CR based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. A combination of  searches for the pair-produced vector-like b^' in various decay channels (b^' --> W t, Z b, h b). Also a model-independent limit is obtained as mass(b^') > 1.03 TeV, assuming that the  branching ratios into Z b, W t, and h b add up to one.


pdgid: Q008BPP
text:
The limit is for b^' in a weak isospin doublet (t^',b^') and  |V(t^'b)| << |V(tb^')|. For a b^' in a doublet  with a charge -4/3 vector-like quark, the limit mass(b^') > 1.14 TeV is obtained.


pdgid: Q008BPP
text:
SIRUNYAN 2017AU based on 2.3 -- 2.6 fb**-1 of p p data at sqrt(s) = 13 TeV. Limit on pair-produced singlet vector-like b^' using one lepton and several jets. The mass  bound is given for a b^' transforming as a singlet under the electroweak symmetry group,  assumed to decay through W, Z or Higgs boson (which decays to jets) and to a third  generation quark.


pdgid: Q008BPP
text:
AAD 2015Z based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Used events with lepton + notET + >=6j (>=1 b) and at least one pair of jets from weak  boson decay, primarily designed to select the signature b^' bbar^' --> W W t tbar --> W W W W b bbar.  This is a limit on pair-produced vector-like b^'. The lower mass limit is 640 GeV for a  vector-like singlet b^'.


pdgid: Q008BPP
text:
Result is based on 1.1 fb**-1 of data. No signal is found for the search of long-lived particles which decay into final states with two electrons or photons, and upper bound on the cross section times branching fraction is obtained for 2 < c < 7000 mm; see Fig. 3. 95% CL excluded region of b^' lifetime and mass is shown in Fig. 4.


pdgid: Q008BPP
text:
ACOSTA 2003 looked for long-lived fourth generation quarks in the data sample of 90 pb**-1 of sqrt(s)=1.8 TeV p pbar collisions by using the muon-like penetration and anomalously high ionization energy loss signature. The corresponding lower mass bound  for the charge (2/3)e quark (t^') is 220 GeV. The t^' bound is higher than the b^' bound because t^' is more likely to produce charged hadrons than b^'. The 95% CL upper bounds for the production cross sections are given in their Fig.3.


pdgid: Q008BPP
text:
AAD 2023AG based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of  vector-like top or bs is searched for in the mode 1lepton + >=4j(>=1b-tagged) +  notET. The data are consistent with the SM background predictions and limits are obtained for  different branching ratios. Masses below 1.59 TeV are excluded assuming a mass-degenerate  vector-like doublet (t^',b^') model.


pdgid: Q008BPP
text:
AAD 2023AV based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of  vector-like b^' is searched for in the mode lepton+- lepton-+ +    >=2j  (>=1b-tagged) +  notET or with 3lepton. The data are consistent with the    SM  background predictions and limits  are obtained for different branching ratios.


pdgid: Q008BPP
text:
SIRUNYAN 2019AQ based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair  production of vector-like b^' is seached for with one b^' decaying into Z b and the  other b^' decaying into W t, Z b, h b. Events with an opposite-sign lepton pair  consistent with coming from Z and jets are used. Mass limits are obtained for a variety of  branching ratios of b^'.


pdgid: Q008BPP
text:
SIRUNYAN 2019BW based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is  for the pair-produced vector-like b^' using all-hadronic final state. The analysis is made for  the Z b, W t, h b modes and mass limits are obtained for a variety of branching ratios.


pdgid: Q008BPP
text:
AABOUD 2018AW based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is for  the pair-produced vector-like b^' using lepton-plus-jets final state. The search is also  sensitive to the decays into Z b and H b final states.


pdgid: Q008BPP
text:
SIRUNYAN 2018BM based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is  for the pair-produced vector-like b^'. Three channels (single lepton, same-charge 2 leptons, or  at least 3 leptons) are considered for various branching fraction combinations. Assuming B(t W) = 1, the limit is 1240 GeV and for B(b Z) = 1 it is 960 GeV.


pdgid: Q008BPP
text:
SIRUNYAN 2018Q based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The limit is for  the pair-produced vector-like b^' that couple only to light quarks.  Upper cross section limits  on the single production of a b^' and constraints for other decay channels (Z q and H q) are also  given in the paper.


pdgid: Q008BPP
text:
KHACHATRYAN 2016AN based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. Limit on  pair-produced vector-like b^' using 1, 2, and >2 leptons as well as fully hadronic final  states. Other limits depending on the branching fractions to t W, b Z, and b H are  given in Table IX.


pdgid: Q008BPP
text:
AAD 2015AR based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Used lepton-plus-jets  final state. See Fig. 24 for mass limits in the plane of B(b^' --> W t) vs. B(b^' --> H b) from  b^' bbar^' --> H b + X searches.


pdgid: Q008BPP
text:
AAD 2015BY based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Limit on pair-produced  vector-like  b^' assuming the branching fractions to W, Z, and h modes of the  singlet model. Used events containing >=2lepton + notET + >=2j (>=1  b) and including a same-sign lepton pair.


pdgid: Q008BPP
text:
AAD 2015BY based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Limit on  pair-produced chiral b^'-quark. Used events containing  >=2lepton + notET +  >=2j (>=1 b) and including a same-sign lepton pair.


pdgid: Q008BPP
text:
AAD 2015CN based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Limit on pair-production of chiral  b^'-quark. Used events with lepton + notET + >=4j (non-b-tagged). Limits on  a heavy  vector-like quark, which decays into W  q, Z q, h q, are presented in the plane B(Q --> W q) vs. B(Q --> h q) in Fig. 12.


pdgid: Q008BPP
text:
Based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. No significant excess over SM expectation is found in the search for pair production or single production of b^' in the events with dilepton from a high pT Z and additional jets (>= 1 b-tag). If instead of B(b^' --> W t) = 1 an electroweak singlet with B(b^' --> W t) ~ 0.45 is assumed, the limit reduces to 685 GeV.


pdgid: Q008BPP
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2013I looked for events with one isolated electron or muon, large notET, and at least four jets with large transverse momenta, where one jet is likely to originate from the decay of a bottom quark.


pdgid: Q008BPP
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV.  No signal is found for the search of heavy quark pair production that decay into W and a t quark in the events with a high pT isolated lepton, large notET, and at least 6 jets in which one, two or more dijets are from W.


pdgid: Q008BPP
text:
Based on 2.0 fb**-1 of p p data at sqrt(s) = 7 TeV. No b^' --> Z b invariant mass peak is found in the search of heavy quark pair production that decay into Z and a b quark in events with Z --> e+ e- and at least one  b-jet. The lower mass limit is 358 GeV for a vector-like singlet b^' mixing solely with the third SM generation.


pdgid: Q008BPP
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. No signal is found for the search of heavy quark pair production that decay into W and a quark in the events with dileptons, large notET, and >=2 jets.


pdgid: Q008BPP
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. AAD 2012BE looked for events with two isolated like-sign leptons  and at least 2 jets, large notET and H(T) > 350 GeV.


pdgid: Q008BPP
text:
Based on 5 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2012BH searched for QCD and EW production of single and pair  of degenerate 4'th generation quarks that decay to b W or t W. Absence of signal in events with one lepton,  same-sign dileptons or tri-leptons gives the bound. With a mass difference of 25 GeV/c**2 between mass(t^') and mass(b^'), the corresponding limit shifts by about +-20 GeV/c**2.


pdgid: Q008BPP
text:
Based on 4.9 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2012X looked for events with trileptons or same-sign dileptons and at least one b jet.


pdgid: Q008BPP
text:
Based on 4.8 fb**-1 of data in p pbar collisions at 1.96 TeV. AALTONEN 2011J looked for events with lepton + notET + >=5j (>=1 b or c). No signal is observed and the bound CS(b^'() bbar^'()) < 30 fb for mass(b^'()) > 375 GeV is found for B(b^'() --> W t) = 1.


pdgid: Q008BPP
text:
Based on 34 pb**-1 of data in p p collisions at 7 TeV.  CHATRCHYAN 2011L looked for multi-jet events with trileptons or same-sign dileptons. No excess above the SM background excludes mass(b^'()) between 255 and 361 GeV at 95% CL for B(b^'() --> W t) = 1.


pdgid: Q008BPP
text:
Based on 2.7 fb**-1 of data in p pbar collisions at sqrt(s) = 1.96 TeV. AALTONEN 2010H looked for pair production of heavy quarks which decay into t W- or t W+, in events with same sign dileptons (e or mu), several jets and large missing E(T). The result is obtained for b^'() which decays into t W-. For the charge 5/3 quark (T_{{5/3}}()) which decays into t W+, mass(T_{{5/3}}()) > 365 GeV (95% CL) is found when it has the charge -1/3 partner B of the same mass.


pdgid: Q008BPP
text:
FLACCO 2010 result is obtained from AALTONEN 2010H result of mass(b^'())> 338 GeV, by relaxing the condition B(b^'() --> W t) = 100% when mass(b^'())> mass(t^'()).


pdgid: Q008BPP
text:
HUANG 2008 reexamined the b^' mass lower bound of 268 GeV obtained in AALTONEN 2007C that assumes B(b^' --> Z b) = 1, which does not hold for mass(b^') > 255 GeV. The lower mass bound is given in the plane of sin**2(theta(t b^')) and mass(b^').


pdgid: Q008BPP
text:
Result is based on 1.06 fb**-1 of data. No excess from the SM Z+jet events is found when Z decays into e e or mu mu.  The mass(b^') bound is found by comparing the resulting upper bound on CS(b^' bbar^') [1-(1-B(b^' --> Z b))**2] and the LO estimate of the b^' pair production cross section shown in Fig. 38 of the article.


pdgid: Q008BPP
text:
AFFOLDER 2000 looked for b^' that decays in to b+Z. The signal searched for is b b Z Z events where one Z decays into e+ e- or mu+ mu- and the other Z decays hadronically. The bound assumes B(b^' --> Z b)= 100%.  Between 100 GeV and 199 GeV, the 95%CL upper bound on sigma(b^' --> bbar^')xB**2(b^' --> Z b) is also given (see their Fig.2).


pdgid: Q008BPP
text:
ABE 1998N looked for Z --> e+ e- decays with displaced vertices. Quoted limit assumes B(b^' --> Z b)=1 and c tau_b^'=1cm. The limit is lower than mass(Z)+mass(b) (~96 GeV) if c tau>22cm or c tau<0.009cm.  See their Fig.4.


pdgid: Q008BPP
text:
ABACHI 1997D searched for b^' that decays mainly via FCNC.  They obtained 95%CL upper bounds on B(b^' bbar^' --> gamma + 3 jets) and B(b^' bbar^' --> 2gamma + 2 jets), which can be interpreted as the lower mass bound mass(b^')>mass(Z)+mass(b).


pdgid: Q008BPP
text:
ABACHI 1995F bound on the top-quark also applies to b^' and t^' quarks that decay predominantly into W.  See FROGGATT 1997.


pdgid: Q008BPP
text:
MUKHOPADHYAYA 1993 analyze CDF dilepton data of ABE 1992G in terms of a new quark decaying via flavor-changing neutral current.  The above limit assumes B(b^' --> b lepton+ lepton-)=1%. For an exotic quark decaying only via virtual Z [B(b lepton+ lepton-) = 3%], the limit is 85 GeV.


pdgid: Q008BPP
text:
ABE 1992 dilepton analysis limit of >85 GeV at CL=95% also applies to b^' quarks, as discussed in ABE 1990B.


pdgid: Q008BPP
text:
AKESSON 1990 searched for events having an electron with p(T) > 12 GeV, missing momentum > 15 GeV, and a jet with E(T) > 10 GeV, |eta| < 2.2, and excluded mass(b^') between 30 and 69 GeV.


pdgid: Q008BPP
text:
For the reduction of the limit due to non-charged-current decay modes, see Fig.19 of ALBAJAR 1990B.


pdgid: Q008BPP
text:
ALBAJAR 1988 study events at Ecm = 546 and 630 GeV with a muon or isolated electron, accompanied by one or more jets and find agreement with Monte Carlo predictions for the production of charm and bottom, without the need for a new quark. The lower mass limit is obtained by using a conservative estimate for the b^' bbar^' production cross section and by assuming that it cannot be produced in W decays. The value quoted here is revised using the full O(alpha(s)**3) cross section of ALTARELLI 1988.


pdgid: Q008BPS
text:
TUMASYAN 2022O based on 138 fb**-1 of data in p p collisions at 13 TeV. No     significant excess over SM expectation is found in the search for a left-handed b^' assuming     100% decay to t W using a t-tagged jet and a lepton from W. The model assumes   that the b^' has the excited quark couplings. The bound is from a statistical combination with   an earlier analysis by SIRUNYAN 2021AG. The 95% CL bounds are also set as 3.0, 3.0, and  3.2  TeV,  respectively, for left-handed, right-handed, and vector-like couplings.


pdgid: Q008BPS
text:
ABAZOV 2011F based on 5.4 fb**-1 of data in ppbar collisions at 1.96 TeV. ABAZOV 2011F looked for single production of b^'()  via the W or Z coupling to the first generation up or down quarks, respectively. Model independent cross section limits  for the single production processes p pbar --> b^'() q --> W u q, and p pbar --> b^'() q --> Z d q are given in Figs. 3 and 4,  respectively, and the mass limits are obtained for the model of ATRE 2009 with degenerate bi-doublets of vector-like quarks.


pdgid: Q008BPS
text:
AAD 2023CQ based on 139 fb**-1 of data in p p collisions at 13 TeV. No significant  excess over SM expectation is found. Limits on mass and production cross section of a vector-like  b^' are obtained in several theoretical scenarios determined by the couplings betwen b^'  and W, Z, h.


pdgid: Q008BPS
text:
SIRUNYAN 2021AG based on 137 fb**-1 of data in p p collisions at 13 TeV. No  significant excess over SM expectation is found in the search for a left-handed b^' assuming    100% decay to t W using all hadronic final states, where t and W are tagged as  single jets, respectively. The model assumes that the b^' has the excited quark couplings. The   95%  CL bounds are also set as 2.8 and 3.1 TeV, respectively, for the right-handed and  vector-like couplings.


pdgid: Q008BPS
text:
SIRUNYAN 2019AI based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. Exclusion  limits are set on the product of the production cross section and branching fraction for the  b^'(-1/3) + b and b^'(-1/3) + t modes as a function of the vector-like quark mass in Figs.  7 and 8 and in Tab. 2 for relative vector-like quark widths between 1 and 30% for left- and  right-handed vector-like quark couplings. No significant deviation from the SM prediction is  observed.


pdgid: Q008BPS
text:
AAD 2016AH based on 20.3 fb**-1 of data in p p collisions at 8 TeV. No significant  excess over SM expectation is found in the search for a vector-like b^' in the single-lepton  and dilepton channels (lepton or lepton lepton) + 1,2,3 j (>=1b). The model assumes that the b^' has the excited quark couplings.


pdgid: Q008BPS
text:
Based on 19.7 fb**-1 of data in p p collisions at 8 TeV. Limit on left-handed b^' assuming 100% decay to t W and using all-hadronic,  lepton + jets, and dilepton final states.


pdgid: Q008BPS
text:
Based on 19.7 fb**-1 of data in p p collisions at 8 TeV. Limit on right-handed b^' assuming 100% decay to t W and using all-hadronic,  lepton + jets, and dilepton final states.


pdgid: Q008BPS
text:
Based on 19.7 fb**-1 of data in p p collisions at 8 TeV.  Limit on vector-like b^' assuming 100% decay to t W and using  all-hadronic, lepton+jets, and dilepton final states.


pdgid: Q008BPE
text:
DECAMP 1990F looked for isolated charged particles, for isolated photons, and for four-jet final states.  The modes b^' --> b g for B(b^' --> b g) > 65% b^' --> b gamma for B(b^' --> b gamma) > 5% are excluded.  Charged Higgs decay were not discussed.


pdgid: Q008BPE
text:
ABDALLAH 2007 searched for b^' pair production at Ecm=196 -- 209 GeV, with 420pb**-1. No signal leads to the 95% CL upper limits on  B(b^' --> b Z) and B(b^' --> c W) for mass(b^') = 96 to 103 GeV.


pdgid: Q008BPE
text:
ADRIANI 1993G search for vector quarkonium states near Z and give limit on quarkonium-Z mixing parameter delta<(10 -- 30) GeV**2 (95%CL) for the mass 88 -- 94.5 GeV.  Using Richardson potential, a 1S (b^' bbar^') state is excluded for the mass range 87.7 -- 94.7 GeV. This range depends on the potential choice.


pdgid: Q008BPE
text:
AKRAWY 1990B search was restricted to data near the Z peak at Ecm = 91.26 GeV at LEP. The excluded region is between 23.6 and 41.4 GeV if no H+ decays exist.  For charged Higgs decays the excluded regions are between (mass(H+) +1.5 GeV) and 45.5 GeV.


pdgid: Q008BPE
text:
AKRAWY 1990J search for isolated photons in hadronic Z decay and derive  B(Z --> b^' bbar^').B(b^' --> gamma X)/B(Z --> hadrons) < 2.2E-3. Mass limit assumes  B(b^' --> gamma X) > 10%.


pdgid: Q008BPE
text:
ABE 1989E search at Ecm = 56-57 GeV at TRISTAN for multihadron events with a spherical shape (using thrust and acoplanarity) or containing isolated leptons.


pdgid: Q008BPE
text:
If the photonic decay mode is large (B(b^' --> b gamma) > 25%), the ABRAMS 1989C limit is 45.4 GeV.  The limit for for Higgs decay (b^' --> c H-, H- --> cbar s) is 45.2 GeV.


pdgid: Q008BPE
text:
ADACHI 1989C search was at Ecm = 56.5-60.8 GeV at TRISTAN using multi-hadron events accompanying muons.


pdgid: Q008BPE
text:
IGARASHI 1988 searches for leptons in low-thrust events and gives DeltaR(b^') < 0.26 (95% CL) assuming charged current decay, which translates to mass(b^') > 24.4 GeV.


pdgid: Q008BPE
text:
SAGAWA 1988 set limit CS(top) < 6.1 pb at CL=95% for top-flavored hadron production from event shape analyses at Ecm = 52 GeV.  By using the quark parton model cross-section formula near threshold, the above limit leads to lower mass bounds of 23.8 GeV for charge -1/3 quarks.


pdgid: Q008BPE
text:
ADEVA 1986 give 95%CL upper bound on an excess of the normalized cross section, DeltaR, as a function of the minimum c.m. energy (see their figure 3). Production of a pair of 1/3 charge quarks is excluded up to Ecm = 45.4 GeV.


pdgid: Q008BPE
text:
ALTHOFF 1984C narrow state search sets limit Gamma(e+ e-)*B(hadrons) <2.4 keV CL = 95% and heavy charge 1/3 quark pair production m >21 GeV, CL = 95%.


pdgid: Q008BPE
text:
ALTHOFF 1984I exclude heavy quark pair production for 7 <m <19 GeV (1/3 charge) using aplanarity distributions (CL = 95%).


pdgid: Q009TPP
text:
AAD 2024N based on 140 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of  vector-like t^' is searched for in the lepton+jets mode. The limit is for t^' in a weak  isospin doublet. The data are consistent with the SM background predictions and limits are obtained  for different branching ratios. The same limits also apply to t^' of charge -4/3.


pdgid: Q009TPP
text:
AAD 2024N based on 140 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of  vector-like t^' is searched for in the lepton+jets mode. The limit is for a singlet model. The  data are consistent with the SM background predictions and limits are obtained for different  branching ratios.


pdgid: Q009TPP
text:
AAD 2023AV based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of     vector-like t^' is searched for in the mode lepton+- lepton-+ +    >=2j  (>=1b-tagged) + notET or with 3lepton. The data are consistent with the    SM  background predictions and limits are obtained for different branching ratios.


pdgid: Q009TPP
text:
TUMASYAN 2023AX based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. A vector-like  t^' is seached for in the t + H  (H --> gamma gamma) decay channel. EW production via a  coupling to third-generation quarks of kappa(T) = 0.25 is assumed. The branching  fractions are assumed to be 50, 25, and 25%, respectively, for b W, t Z, and t H  decays.


pdgid: Q009TPP
text:
TUMASYAN 2023V based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production     of vector-like t^' is seached for in the single-lepton, same-sign charge dilepton and   multi-lepton   channels. The data are consistent with the SM background predictions and limits are   obtained for   different branching ratios.  Masses below 1.48 TeV are excluded for all decays to   third generation   quarks.


pdgid: Q009TPP
text:
AABOUD 2018CE based on 36.1 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV.  Events including a same-sign lepton pair are used. The limit is for a singlet model, assuming the  branching ratios of t^' into Z t, W b and H t as predicted by the model.


pdgid: Q009TPP
text:
AABOUD 2018CP based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair and single  production of vector-like t^' are seached for with at least one t^' decaying into Z t.  In the case of B(t^' --> Z t) = 1, the limit is mass(t^') > 1340 GeV.


pdgid: Q009TPP
text:
The limit is for the singlet model, assuming that the branching ratios into Z t, W b, and  H t add up to one.


pdgid: Q009TPP
text:
The limit is for the doublet model, assuming that the branching ratios into Z t, W b, and  H t add up to one.


pdgid: Q009TPP
text:
AABOUD 2018CR based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. A combination of  searches for the pair-produced vector-like t^' in various decay channels (t^' --> W b, Z t, h t). Also a model-independent limit is obtained as mass(t^') > 1.31 TeV, assuming that the  branching ratios into Z t, W b and h t add up to one.


pdgid: Q009TPP
text:
SIRUNYAN 2018BM based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is  for the pair-produced vector-like t^'. Three channels (single lepton, same-charge 2 leptons, or  at least 3 leptons) are considered for various branching fraction combinations. Assuming B(t H) = 1, the limit is 1270 GeV and for B(t Z) = 1 it is 1300 GeV.


pdgid: Q009TPP
text:
SIRUNYAN 2018Q based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The limit is for  the pair-produced vector-like t^' that couple only to light quarks. Constraints for other decay  channels (Z q and H q) are also given in the paper.


pdgid: Q009TPP
text:
SIRUNYAN 2017AU based on 2.3-2.6 fb**-1 of p p data at sqrt(s) = 13 TeV.  Limit on  pair-produced singlet vector-like t^' using one lepton and several jets. The mass bound is  given for a t^' transforming as a singlet under the electroweak symmetry group, assumed to  decay through W, Z or Higgs boson (which decays to jets) and to a third generation quark.  For a doublet, the limit is >830 GeV.  Other limits are also given in the paper.


pdgid: Q009TPP
text:
Based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. No significant excess over SM  expectation is found in the search for pair production or single production of t^' in the  events with dilepton from a high pT Z and additional jets (>= 1 b-tag).  If instead of B(b^' --> W t) = 1 an electroweak singlet with B(b^' --> W t) ~ 0.45 is assumed, the limit reduces to 685 GeV.


pdgid: Q009TPP
text:
Based on 1.04 fb**-1 of data in p p collisions at 7 TeV. AAD 2012C looked for t^'() tbar^'() production followed by t^'() decaying into a top quark and X, an invisible particle, in a final state with an isolated high-P(T) lepton, four or more jets, and a large missing transverse energy. No excess over the SM t tbar production gives the upper limit on t^'() tbar^'() production cross section as a function of mass(t^'()) and mass(X). The result is obtained for B(t^'() --> W t) = 1.


pdgid: Q009TPP
text:
Based on 5 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2012BH searched for QCD and EW production of single and pair  of degenerate 4'th generation quarks that decay to W b or W t. Absence of signal in events with one lepton,  same-sign dileptons or tri-leptons gives the bound. With a mass difference of 25 GeV/c**2 between mass(t^') and mass(b^'), the corresponding limit shifts by about +-20 GeV/c**2.


pdgid: Q009TPP
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2012P looked for t^' tbar^' production events with two isolated high pT leptons, large notET, and 2 high pT jets with b-tag. The absence of signal  above the SM background gives the limit for B(t^' --> W b) = 1.


pdgid: Q009TPP
text:
AAD 2023AG based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of  vector-like top or bs is searched for in the mode 1lepton + >=4j(>=1b-tagged) +   notET. The data are consistent with the SM background predictions and limits are obtained for   different branching ratios. Masses below 1.59 TeV are excluded assuming a mass-degenerate  vector-like doublet (t^',b^') model.


pdgid: Q009TPP
text:
SIRUNYAN 2019AQ based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair  production of vector-like t^' is seached for with one t^' decaying into Z t and the  other t^' decaying into W b, Z t, h t. Events with an opposite-sign lepton pair  consistent with coming from Z and jets are used. Mass limits are obtained for a variety of  branching ratios of t^'.


pdgid: Q009TPP
text:
SIRUNYAN 2019BW based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is  for the pair-produced vector-like t^' using all-hadronic final state. The analysis is made for  the W b, Z t, h t modes and mass limits are obtained for a variety of branching ratios.


pdgid: Q009TPP
text:
AABOUD 2018CL based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is for  the pair-produced vector-like t^' using all-hadronic final state. The analysis is also made for the W b, Z t, h t modes and mass limits are obtained for  a variety of branching ratios.


pdgid: Q009TPP
text:
SIRUNYAN 2018W based on 35.8 fb**-1 of p p data at sqrt(s) = 13 TeV. The limit is  for the vector-like t^' pair-produced by strong interaction using lepton-plus-jets mode and  assuming that B(t^' --> W b) is 100%. Generally the measurement sets upper limits on  the product of the production cross section and branching faction to W b for any new  pair-produced heavy quark decaying to this channel as a narrow resonance.


pdgid: Q009TPP
text:
AABOUD 2017L based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. No signal is  found in the search for heavy quark pair production that decay into Z t followed by Z --> nu nu in  the events with one lepton, large notET, and >=4 jets. The lower mass limit 0.87 (1.05)  TeV is obtained for the singlet (doublet) model with other possible decay modes.


pdgid: Q009TPP
text:
AAD 2015AR based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Used  lepton-plus-jets final state. See Fig. 20 for mass limits in the plane of B(t^' --> H t) vs.  B(t^' --> W b) from a   combination of t^' tbar^' --> W b + X and t^' tbar^' --> H t + X  searches. Any  branching ratio scenario is excluded for mass below 715 GeV.


pdgid: Q009TPP
text:
AAD 2015BY based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV.  Limit on pair-produced  vector-like t^' assuming the branching fractions to W, Z, and h modes of the  singlet model. Used events containing >=2lepton + notET + >=2j (>=1  b) and including a same-sign lepton pair.


pdgid: Q009TPP
text:
KHACHATRYAN 2015AI based on 19.7 fb**-1 of p p data at sqrt(s) = 8 TeV. The search  exploits all-hadronic final states by tagging boosted Higgs boson using jet substructure and  b-tagging.


pdgid: Q009TPP
text:
Based on 19.5 fb**-1 of p p data at sqrt(s) = 8TeV. The t^' quark is pair produced and is assumed to decay into three different final states of bW, tZ, and th. The search is carried out using events with at least one isolated lepton.


pdgid: Q009TPP
text:
Based on 4.7 fb**-1 of p p data at sqrt(s) = 7 TeV. No signal is found for the search of heavy quark pair production that decay into   W and a b quark in the events with a high pT isolated lepton, large notET and  at least 3 jets  (>= 1 b-tag). Vector-like quark of charge 2/3 with 400 <  mass(t^') < 550 GeV and B(t^' --> W b) > 0.63 is excluded at 95% CL.


pdgid: Q009TPP
text:
Based on 1.04 fb**-1 of p p data at sqrt(s) = 7 TeV. No signal is found in the search for pair produced heavy quarks that decay into W boson and a b quark in the events with a high pT isolated lepton, large notET and at least 3 jets (>=1 b-tag).


pdgid: Q009TPP
text:
Based on 5.0 fb**-1 of p p data at sqrt(s) = 7 TeV. CHATRCHYAN 2012BC looked for t^' tbar^' production events with a single isolated high pT lepton, large notET and at least 4 high pT jets with a b-tag. The absence of signal above the SM background gives the limit for B(t^' --> W b) = 1.


pdgid: Q009TPP
text:
Based on 5.7 fb**-1 of data in p pbar collisions at 1.96 TeV. AALTONEN 2011AH looked for t^'() tbar^'() production followed by t^'() decaying into a top quark and X, an invisible particle, in the all hadronic decay mode of t tbar. No excess over the SM t tbar production gives the upper limit on t^'() tbar^'() production cross section as a function of mass(t^'()) and mass(X). The result is obtained for B(t^'() --> X t) = 1.


pdgid: Q009TPP
text:
Based on 5.6 fb**-1 of data in ppbar collisions at 1.96 TeV. AALTONEN 2011AL looked for lepton + >=4j events and set upper limits on CS(t^'() tbar^'()) as functions of mass(t^'()).


pdgid: Q009TPP
text:
Based on 4.8 fb**-1 of data in p pbar collisions at 1.96 TeV. AALTONEN 2011O looked for t^'() tbar^'() production signal when t^'() decays into a top quark and X, an invisible particle, in lepton + notET + jets channel.  No excess over the SM t tbar production gives the upper limit on t^'() tbar^'() production cross section as a function of mass(t^'()) and mass(X). The result is obtained for B(t^'() --> X t) = 1.


pdgid: Q009TPP
text:
Based on 5.3 fb**-1 of data in p pbar collisions at 1.96 TeV. ABAZOV 2011Q looked for  lepton + notET + >=4j events and set upper limits on CS(t^'() tbar^'()) as functions of mass(t^'()).


pdgid: Q009TPP
text:
HUANG 2008 reexamined the t^' mass lower bound of 256 GeV obtained in AALTONEN 2008H  that assumes B(b^' --> q Z) = 1 for q = u, c which does not hold when  mass(b^')<mass(t^')-mass(W) or the mixing sin**2(theta(b t^')) is so tiny that the decay occurs outside of the vertex detector. Fig. 1 gives that lower bound on  mass(t^') in the plane of sin**2(theta(b t^')) and mass(b^').


pdgid: Q009TPP
text:
Searches for pair production of a new heavy top-like quark t^' decaying to a W boson and another  quark by fitting the observed spectrum of total transverse energy and reconstructed t^' mass in the lepton + jets events.


pdgid: Q009TP5
text:
AAD 2023AG based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. Pair production of   vector-like top or b^' is seached for in the mode 1lepton + >=4j(>=1b-tagged)  +  notET.   The data are consistent with the SM background predictions and limits are  obtained  for different branching ratios.


pdgid: Q009TP5
text:
SIRUNYAN 2019T based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. Signals are  searched in the final states of t^' pair production, with same-sign leptons (which come from a  t^' decay) or a single lepton (which comes from a W out of 4Ws), along with jets, and  no excess over the SM expectation is found.


pdgid: Q009TP5
text:
AABOUD 2018CE based on 36.1 fb**-1 of proton-proton data taken at sqrt(s) = 13 TeV.  Events including a same-sign lepton pair are used. The limit is for the pair-produced vector-like  t^'. With single t^' production included, assuming t^' t W coupling of one, the limit  is mass(t^') > 1.6 TeV.


pdgid: Q009TP5
text:
SIRUNYAN 2017J based on 2.3 fb**-1 of p p data at sqrt(s) = 13 TeV. Signals are  searched in the final states of t^' pair production, with same-sign leptons (which come from a  t^' decay) or a single lepton (which comes from a W out of 4Ws), along with jets, and  no excess over the SM expectation is found.


pdgid: Q009TP5
text:
AAD 2015BY based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Limit on  t^'(5/3) in pair and single production assuming its coupling to W t is equal to one. Used  events containing >=2lepton + notET + >=2j (>=1 b) and including a  same-sign lepton pair.


pdgid: Q009TP5
text:
AAD 2015Z based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. Used events with   lepton + notET + >=6j (>=1 b) and at least one pair of jets from weak  boson decay, sensitive to the final state b bbar W+ W- W+ W-.


pdgid: Q009TP5
text:
CHATRCHYAN 2014T based on 19.5 fb**-1 of p p data at sqrt(s) = 8 TeV.  Non-observation of anomaly in H_{{T}} distribution in the same-sign dilepton events leads to the  limit when pair produced t^'(5/3) quark decays exclusively into t and W+, resulting in  the final state with b bbar W+ W- W+ W-.


pdgid: Q009TP5
text:
AABOUD 2018AW based on 36.1 fb**-1 of p p data at sqrt(s) = 13 TeV. Limit on  t^'(5/3) in pair production assuming its coupling to W t is equal to one. Lepton-plus-jets  final state is used, characterized by lepton + notET + jets (>=1 b-tagged).


pdgid: Q009TPS
text:
AAD 2024AK based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. No significant  excess over SM expectation is found in the search for a vector-like t^' in events with a  reconstructed boosted top quark and a large missing transverse momentum. B(t^' --> W b) +  B(t^' --> t Z) + B(t^' --> t H) = 1 and B(t^' --> t Z) = B(t^' --> t H) =  1/4 are assumed.


pdgid: Q009TPS
text:
AAD 2016AV based on 20.3 fb**-1 of p p data at sqrt(s) = 8 TeV. No significant  excess over SM expectation is found in the search for a fully reconstructed vector-like t^' in  the mode lepton + notET + >=2j (>=1b). A veto on massive large-radius  jets is used to reject the t tbar background.


pdgid: Q009TPS
text:
ABAZOV 2011F based on 5.4 fb**-1 of data in ppbar collisions at 1.96 TeV. It looked for  single production of t^'() via the Z or E coupling to the first generation up or down  quarks, respectively. Model independent cross section limits for the single production processes  p pbar --> t^'() q -->(W d)q, and p pbar --> t^'() q -->(Z d)q are given in  Figs. 3 and 4, respectively, and the mass limits are obtained for the model of ATRE 2009 with  degenerate bi-doublets of vector-like quarks.


pdgid: Q009TPS
text:
AAD 2024V based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. No significant excess  over SM expectation is found in the search for a vector-like t^' in the Z t decay channel,  which consists of a pair of opposite-sign leptons from a Z-boson, b-tagged jets and forward  jets. The mass range above 1 TeV is targeted and 95% CL limits on the mass and coupling  strength of t^' are set, in the singlet and doublet scenarios.


pdgid: Q009TPS
text:
HAYRAPETYAN 2024AR based on 138 fb**-1 of p p data at sqrt(s) = 13 TeV. No deviation  from the SM expectation is found in the search for a vector-like t^' in the all-hadronic final  state where the t^' is reconstructed as five jets, with three of them being b-jets.  95% CL upper limits are set on the product of the t^'-production cross section and the  branching ratio B(t^' --> t Z) or B(t^' --> t H).


pdgid: Q009TPS
text:
AAD 2022G based on 139 fb**-1 of p p data at sqrt(s) = 13 TeV. No significant excess  over SM expectation is found in the search for a vector-like t^' in the H t decay channel,  where H and t are reconstructed as single jets. The mass range between 1.0 and 2.3 TeV is  targeted and 95% CL limits on the production section times the decay branching fraction are  set depending on the coupling and mass of t^'.


pdgid: Q009TPS
text:
TUMASYAN 2022X based on 137 fb**-1 of p p data at sqrt(s) = 13 TeV. No significant  excess over SM expectation is found in the search for a vector-like t^' in the Z t decay  channel, where Z decays to neutrinos and t decays hadronically. The 95% CL limits on  the production section times the decay branching fraction are set depending on the coupling and  mass of t^'.


pdgid: Q009T5S
text:
SIRUNYAN 2019AI based on 35.9 fb**-1 of p p data at sqrt(s) = 13 TeV. Exclusion  limits are set on the product of the production cross section and branching fraction for the  b^'(-1/3) + t and t^'(5/3) + t modes as a function of the vector-like quark mass in Fig. 8  and Tab. 2 for relative vector-like quark widths between 1 and 30% for left- and right-handed  vector-like quark couplings. No significant deviation from the SM prediction is observed.


pdgid: S027C
text:
CHATRCHYAN 2013AR limits assume pair-produced long-lived spin-1/2 particles neutral under SU(3)(C) and SU(2)(L).


pdgid: S027FR
text:
HUENTRUP 1996 quote 95% CL limits for production of fragments with charge differing by as much as +-1/3 (in units of e) for charge 6<=Z<=10.


pdgid: S027FR
text:
BUSKULIC 1993C limits for inclusive quark production are more conservative if the ALEPH hadronic fragmentation function is assumed.


pdgid: S027FR
text:
CECCHINI 1993 limit at 90%CL for 23/3 <=Z<=40/3, for 16A GeV O, 14.5A Si, and 200A S incident on Cu target.  Other limits are 2.3E-4 for 17/3<=Z<=20/3 and 1.2E-4 for 20/3 <=Z<=23/3.


pdgid: S027FR
text:
GHOSH 1992 reports measurement of spallation fragment charge based on ionization in emulsion.  Out of 650 measured tracks, 2 were consistent with charge 5e/3, and 4 with 7e/3.


pdgid: S027FR
text:
HE 1991 limits are for charges of the form N+-1/3 from 23/3 to 38/3, and correspond to cross-section limits of 380mub(Pb) and 320mub(Cu).


pdgid: S027F
text:
ALEMANNO 2022 uses data from the DAMPE satellite, with calorimetry and tracking to search for   fractionally charged particles with q =+-2/3e with a exposure time of   2.3E7 s.


pdgid: S027F
text:
See AGNESE 2015 Fig.6 for limits on vertical density as function of charge extending to  |q|/e < 1/10.


pdgid: S027F
text:
AMBROSIO 2000C limit is below 11E-15 for 0.25<q/e<0.5, and is changing rapidly near q/e=2/3, where it is 2E-14.


pdgid: S027RHO
text:
95% CL limit for fractional charge particles with 0.18e<=|Q(residual)|<=0.82e in total of 70.1 mg of silicone oil.


pdgid: S027RHO
text:
95% CL limit for particles with fractional charge  |Q(residual)|>0.16e in total of 17.4~mg of silicone oil.


pdgid: S027RHO
text:
Note that in PHILLIPS 1988 these authors report a subtle magnetic effect which could account for the apparent fractional charges.


pdgid: S008M
text:
DAUM 2019 value is based on their previous (1991+1996) measurements of the mu+ momentum  of 29.79200+-0.00011 MeV for pi+ decay at rest. It also uses mass(mu) = 105.6583745+-0.0000024 MeV, and  assumes conservatively mass(nu_{{mu}}) = 2.0+-2.0 MeV. It is the most precise charged pion mass  determination.


pdgid: S008M
text:
JECKELMANN 1994 Solution B (dominant 2-electron K-shell occupancy), chosen for consistency with positive mass**2(nu_{{mu}}).


pdgid: S008M
text:
ASSAMAGAN 1996 measures the mu+ momentum p_{{mu}} in pi+ --> mu+ nu_mu decay at rest to be 29.79200+-0.00011 MeV/c.  Combined with the mu+ mass and the assumption mass(nu_{{mu}}) = 0, this gives the pi+ mass above; if mass(nu_{{mu}})>0, mass(pi+) given above is a lower limit. Combined instead with mass(mu) and (assuming CPT) the pi- mass of JECKELMANN 1994, p(mu) gives an upper limit on mass(nu_{{mu}}) (see the nu_{{mu}}).


pdgid: S008M
text:
JECKELMANN 1994 Solution A (small 2-electron K-shell occupancy) in combination with either the DAUM 1991 or ASSAMAGAN 1994 pion decay muon momentum measurement yields a significantly negative mass**2(nu_{{mu}}).  It is accordingly not used in our fits.


pdgid: S008M
text:
The DAUM 1991 value includes the ABELA 1984 result. The value is based on a measurement of the mu+ momentum for pi+ decay at rest, p_{{mu}} = 29.79179+-0.00053 MeV, uses mass(mu) = 105.658389+-0.000034 MeV, and assumes that mass(nu_{{mu}}) = 0. The last assumption means that in fact the value is a lower limit.


pdgid: S008M
text:
JECKELMANN 1986B gives mass(pi)/mass(e) = 273.12677(71). We use mass(e) = 0.51099906(15) MeV from COHEN 1987. The authors note that two solutions for the probability distribution of K-shell occupancy fit equally well, and use other data to choose the lower of the two possible pi+- masses.


pdgid: S008M
text:
These values are scaled with a new wavelength-energy conversion factor Vlambda = 1.23984244(37)x10**-6 eV m from COHEN 1987. The LU 1980 screening correction relies upon a theoretical calculation of inner-shell refilling rates.


pdgid: S008M
text:
This MARUSHENKO 1976 value used at the authors' request to use the accepted set of calibration gamma energies.  Error increased from 0.0017 MeV to include QED calculation error of 0.0017 MeV (12 ppm).


pdgid: S008D
text:
The DAUM 1991 value assumes that mass(nu_{{mu}}) = 0 and uses our mass(mu) = 105.658389+-0.000034 MeV.


pdgid: S008R1
text:
BRESSI 1998 result is given for E(gamma)>1 MeV only. Result agrees with QED expectation, 2.283E-4 and does not confirm discrepancy of earlier experiment CASTAGNOLI 1958.


pdgid: S008R4
text:
STETZ 1978 is for an e- gamma opening angle >132degrees.  Obtains 3.7 when using same cutoffs as DEPOMMIER 1963B.


pdgid: S008R3
text:
POCANIC 2004 normalizes to e+ nu_e decays, using the PDG 2004 value B(pi+ --> e+ nu_e) = 1.230+-0.004E-4. We add their statistical (0.004E-8), systematic (0.004E-8) and systematic error due to the uncertainty of B(pi+ --> e+ nu_e)  (0.003E-8) in quadrature.


pdgid: S008R5
text:
This measurement by BARANOV 1992 is of the structure-dependent part of the decay.  The value depends on values assumed for ratios of form factors.


pdgid: S008R6
text:
COOPER 1982 limit on nubar_{{e}} observation is here interpreted as a limit on lepton number violation.


pdgid: S008R7
text:
COOPER 1982 limit on nu_{{e}} observation is here interpreted as a limit on lepton family number violation.


pdgid: S008FV
text:
The BYCHKOV 2009 F(A) and F(V) results are highly (anti-)correlated: F(A) + 1.0286 F(V) = 0.03853+-0.00014.


pdgid: S008FA
text:
When F(V) is released, the BYCHKOV 2009 F(A) is 0.0117+-0.0017, and  F(A) and F(V) results are highly (anti-)correlated: F(A) + 1.0286 F(V) = 0.03853+-0.00014.


pdgid: S008FA
text:
These values come from fixing the vector form factor at the CVC prediction, F_{{V}} = 0.0259+-0.0005.


pdgid: S008FA
text:
The result of STETZ 1978 has a two-fold ambiguity.  We take the solution compatible with later determinations.


pdgid: S008CR
text:
This value combines the measurements of ANANTHANARAYAN 2017 and COLANGELO 2019 which  are based on the same data set. The uncertainty range is chosen to cover both results.


pdgid: S008CR
text:
CUI 2021A perform a fit including spacelike data only. Employ a new mathematical procedure  based on interpolation via continued fractions augmented by statistical sampling. Also do not  impose the charge conserving normalization condition F(0) = 1.


pdgid: S008CR
text:
COLANGELO 2019 fit existing F(V) data, using an extended Omnes dispersive representation.  This analysis is based on the same data set of ANANTHANARAYAN 2017 . Accordingly, they cannot  be averaged. We combine the results into a common value, with the uncertainty range chosen to cover  the uncertainty ranges of both analyses.


pdgid: S008CR
text:
ANANTHANARAYAN 2017 fit existing F(V) data, using a mixed phase-modulus dispersive  representation. This analysis is based on the same data set of COLANGELO 2019. Accordingly,  they cannot be averaged. We combine the results into a common value, with the uncertainty range  chosen to cover the uncertainty ranges of both analyses.


pdgid: S008CR
text:
According to the authors the uncertainty could be underestimated. The value quoted omits the BaBar data AUBERT 2009.


pdgid: S008CR
text:
The extractions could contain an additional theoretical uncertainty which cannot be sufficiently  quantified.


pdgid: S009T
text:
LARIN 2020 reported this lifetime value from a measurement of Gamma(pi0 --> gamma gamma) =  7.802+-0.052+-0.105 eV, combining data from PrimEX-II on 12C and 28Si targets with previous  PrimEx-I LARIN 2011 measurements. This result supersedes LARIN 2011.


pdgid: S009T
text:
BYCHKOV 2009 obtains this using the conserved-vector-current relation between the vector form factor F(V) and the pi0 lifetime.


pdgid: S009T
text:
LARIN 2011 reported Gamma(pi0 --> gamma gamma) = 7.82+-0.14+-0.17 eV  which we converted to mean life tau = hbar/Gamma(total).


pdgid: S009R1
text:
ABOUZAID 2019 measured a value of (0.3920+-0.0016+-0.0036)% from 1999 KTEV data  in  decays, normalised to , for m(e e)  > 15 MeV and then extrapolated it to the full m(e e) range using the Mikaelian and Smith  predictions for the mass spectrum.


pdgid: S009R3
text:
This ABOUZAID 2008D value includes all radiative final states. The error includes both statistical and systematic errors. The correlation between the Dalitz-pair planes gives a direct measurement of the pi0 parity. The pi0 2gamma^* form factor is measured and limits are placed on a scalar contribution to the decay.


pdgid: S009R13
text:
ABOUZAID 2007 result is for m(e+ e-)/mass(pi0)> 0.95.  With radiative corrections the result becomes 7.48+-0.29+-0.25E-8.


pdgid: S009R13
text:
ALAVI-HARATI 1999C quote result for B[pi0 --> e+ e-, (m(e+ e-)/mass(pi0))**2>0.95] to minimize radiative contributions from pi0 --> e+ e- gamma. After radiative corrections they obtain 7.04+-0.46+-0.28E-8.


pdgid: S009A
text:
BEHREND 1991 estimates that their systematic error is of the same order of magnitude as their statistical error, and so we have included a systematic error of this magnitude.  The value of a is obtained by extrapolation from the region of large space-like momentum transfer assuming vector dominance.


pdgid: S009A
text:
TUPPER 1983 is a theoretical analysis of FISCHER 1978 including 2-photon exchange in the corrections.


pdgid: S009A
text:
The FISCHER 1978 error is statistical only.  The result without radiation corrections is +0.05+-0.03.


pdgid: S014M
text:
ABDEL-BARY 2005 disagrees significantly with recent measurements of similar or better precision. See comment in the header.


pdgid: S014W1
text:
RODRIGUES 2008 uses a more sophisticated calculation for the inelastic background due to incoherent photoproduction to reanalyze the eta photoproduction data on Be and Cu at 9 GeV from BROWMAN 1974B. This brings the value of Gamma(eta --> 2gamma) in line with direct measurements of the width.


pdgid: S014W1
text:
Not included in average because the uncertainty resulting from the separation of the coulomb and nuclear amplitudes has apparently been underestimated.


pdgid: S014R34
text:
ABLIKIM 2021AM normalize the branching ratio (eta --> gamma gamma) to B(J/psi --> gamma eta),  which they measured absolutely.


pdgid: S014R34
text:
Not independent of other results listed for LOPEZ 2007. Assuming decays of eta --> gamma gamma, 3pi0, pi+ pi- pi0, pi+ pi- gamma, and e+ e- gamma  account for all eta decays within a contribution of 0.3% to the systematic error.


pdgid: S014R52
text:
ABLIKIM 2021AM normalize the branching ratio () to B(J/psi --> gamma eta), which  they measured absolutely.


pdgid: S014R22
text:
PRAKHOV 2008 is a reanalysis of the data of PRAKHOV 2005, using for the first time the invariant-mass spectrum of the two photons.


pdgid: S014R22
text:
This measurement and the independent analysis of the same data by KNECHT 2004 both imply a lower value of Gamma(pi0 2gamma) than the one obtained by ALDE 1984 from Gamma(pi0 2gamma)/Gamma(2gamma).


pdgid: S014R53
text:
ABLIKIM 2021AM normalize the branching ratio (eta --> pi+ pi- pi0) to B(J/psi --> gamma eta),  which they measured absolutely.


pdgid: S014R7
text:
LOPEZ 2007 reports Gamma(eta --> pi+ pi- pi0) / Gamma(eta --> 2gamma) =  Gamma(9)/Gamma(2) = 0.587+-0.011+-0.009.


pdgid: S014R54
text:
ABLIKIM 2021AM normalize the branching ratio (eta --> pi+ pi- gamma) to B(J/psi --> gamma eta), which  they measured absolutely.


pdgid: S014R1
text:
These experiments are not used in the averages as they do not separate clearly eta --> pi+ pi- pi0 and eta --> pi+ pi- gamma from each other.  The reported values thus probably contain some unknown fraction of eta --> pi+ pi- gamma.


pdgid: S014R29
text:
AGAKISHIEV 2012A uses a data sample of 3.5 GeV proton beam collisions on liquid hydrogen target collected by the HADES detector.


pdgid: S014R27
text:
BABUSCI 2020A combines new data with the previous AMBROSINO 2005A data, and thus  supersedes AMBROSINO 2005A.


pdgid: S014R27
text:
ZHEVLAKOV 2019 derives the value from the experimental limits of nEDM by a calculation using  an effective Lagrangian.


pdgid: S014R37
text:
ACHASOV 1998 observes one event in a +-3sigma region around the eta mass, while a Monte Carlo calculation gives 10+-5 events.  The limit here is the Poisson upper limit for one observed event and no background.


pdgid: S014A1
text:
Layter (private communication 73) says Gormley asymmetry due to (E x B) spark chamber drift. Gormley and Lee (both papers) say probably true but can't check.


pdgid: S014A1
text:
The GORMLEY 1968C asymmetry is probably due to unmeasured (E x B) spark chamber effects.  New experiments with (E x B) controls don't observe an asymmetry.


pdgid: S014BET
text:
The authors don't believe this indicates D-wave because the dependence of beta on the gamma energy is inconsistent with the theoretical prediction. A cos**2(theta) dependence can also come from P- and F-wave interference.


pdgid: S014DP
text:
ABLIKIM 2023AN fit the Dalitz plot density distribution with two parameter sets (a, b, d, f),  and  (a, b, d, f, g).


pdgid: S014DP
text:
ANASTASI 2016A measure the Dalitz parameters a, b, d, f,  and g. This is the first measurement of g.


pdgid: S014A0
text:
This AMBROSINO 2008D value is an indirect result using eta --> pi+ pi0 pi- events and  arescattering matrix that mixes isospin decay amplitudes.


pdgid: S014LAM
text:
ADLARSON 2017B reports Lambda**-2(eta --> gamma e+ e-) = 1.97+-0.11  (GeV/c**2)**-2 which we converted to the quoted Lambda value and uncertainty  (total=statistical plus systematic).


pdgid: S014LAM
text:
ARNALDI 2016 reports Lambda**-2(eta --> gamma mu+ mu-) = 1.934+-0.067+-0.050  (GeV/c**2)**-2 which we converted to the quoted Lambda value.


pdgid: S014LAM
text:
ARNALDI 2009 reports Lambda**-2(eta --> gamma mu+ mu-) = 1.95+-0.17+-0.05  (GeV/c**2)**-2 which we converted to the quoted Lambda value.


pdgid: M014PP
text:
Applying  the chiral unitary approach at NLO to the K_{{e4}} data of BATLEY 2010 and pi N --> pi pi N data of HYAMS 1973, GRAYER 1974, and PROTOPOPESCU 1973.


pdgid: M014PP
text:
Uses the K_{{e4}} data of BATLEY 2010C and the pi N --> pi pi N data of HYAMS 1973, GRAYER 1974, and PROTOPOPESCU 1973.


pdgid: M014PP
text:
Average of three variants of the analytic K-matrix model. Uses the K_{{e4}}() data of BATLEY 2008A  and the pi N --> pi pi N data of HYAMS 1973 and GRAYER 1974.


pdgid: M014PP
text:
Average of the analyses of three data sets in the K-matrix model. Uses the data of BATLEY 2008A, HYAMS 1973, and GRAYER 1974, partially of COHEN 1980 or ETKIN 1982B.


pdgid: M014PP
text:
From the  K_{{e4}}  data of BATLEY 2008A and  pi N --> pi pi N  data of PROTOPOPESCU 1973, GRAYER 1974, and ESTABROOKS 1974.


pdgid: M014PP
text:
Reanalysis of the data from PROTOPOPESCU 1973, ESTABROOKS 1974, GRAYER 1974, ROSSELET 1977, PISLAK 2003, and AKHMETSHIN 2004.


pdgid: M014PP
text:
Using data on psi(2S) --> J/psi pi pi from BAI 2000E and on Upsilon(nS) --> Upsilon(mS) pi pi from BUTLER 1994B and ALEXANDER 1998.


pdgid: M014PP
text:
Coupled channel reanalysis of BATON 1970, BENSINGER 1971, BAILLON 1972, HYAMS 1973, HYAMS 1975, ROSSELET 1977, COHEN 1980, and ETKIN 1982B using the uniformizing variable.


pdgid: M014PP
text:
Reanalysis of data from HYAMS 1973, GRAYER 1974, SRINIVASAN 1975, and ROSSELET 1977 using the interfering amplitude method.


pdgid: M014PP
text:
Uses data from BEIER 1972B, OCHS 1973, HYAMS 1973, GRAYER 1974, ROSSELET 1977, CASON 1983, ASTON 1988, and ARMSTRONG 1991B. Coupled channel analysis with flavor symmetry and all light two-pseudoscalars systems.


pdgid: M014PP
text:
Coupled-channel analysis using data from PROTOPOPESCU 1973, HYAMS 1973, HYAMS 1975, GRAYER 1974, ESTABROOKS 1974, ESTABROOKS 1975, FROGGATT 1977, CORDEN 1979, BISWAS 1981.


pdgid: M014PP
text:
Analysis of data from APEL 1972C, GRAYER 1974, CASON 1976, PAWLICKI 1977. Includes spread and errors of 4 solutions.


pdgid: M014PP
text:
Analysis of data from BATON 1970, BENSINGER 1971, COLTON 1971, BAILLON 1972,PROTOPOPESCU 1973, and WALKER 1967.


pdgid: M014M
text:
Breit-Wigner fit to S-wave intensity measured in pi N --> pi- pi+ N on polarized targets. The fit does not include f_{{0}}(980).


pdgid: M014M
text:
Uses data from ASTON 1988, OCHS 1973, HYAMS 1973, ARMSTRONG 1991B, GRAYER 1974, CASON 1983, ROSSELET 1977, and BEIER 1972B. Coupled channel analysis with flavor symmetry and all light two-pseudoscalars systems.


pdgid: M014M
text:
Uses pi0 pi0 data from ANISOVICH 1994, AMSLER 1994D, and ALDE 1995B, pi+ pi- data from OCHS 1973, GRAYER 1974 and ROSSELET 1977, and eta eta data from ANISOVICH 1994.


pdgid: M014W2
text:
Using Roy-Steiner equations with pi pi phase shifts from an update of  COLANGELO 2001 and from GARCIA-MARTIN 2011A.


pdgid: M014W2
text:
Using dispersion integral with phase input from Roy equations and data from MARSISKE 1990, BOYER 1990, BEHREND 1992, UEHARA  2008A, and MORI 2007.


pdgid: M014W2
text:
Using p, n polarizabilities from PDG 2006 and fitting to pi pi phase motion from  GARCIA-MARTIN 2007 and sigma-poles from GARCIA-MARTIN 2007 and CAPRINI 2006.


pdgid: M014W2
text:
Dispersion theory based amplitude analysis of BOYER 1990, MARSISKE 1990, BEHREND 1992, and MORI 2007.


pdgid: M014W2
text:
This width could equally well be assigned to the f_{{0}}(1370). The authors analyse data from BOYER 1990 and MARSISKE 1990 and report strong correlation with gamma gamma width of f_{{2}}(1270).


pdgid: M009PP
text:
Reanalysis of the K_{{e4}} data of BATLEY 2010C and the pi N --> pi pi N data of  HYAMS 1973, GRAYER 1974, and PROTOPOPESCU 1973 using GKPY equations.


pdgid: M009PP
text:
Reanalysis of data from PROTOPOPESCU 1973, ESTABROOKS 1974, GRAYER 1974, and  COHEN 1980 in the unitarized ChPT model.


pdgid: M009M0
text:
From a fit of the cross section in the energy range 0.525 < sqrt(s) < 0.883 GeV  parameterized by the sum of the Breit-Wigner amplitudes for the rho(770), omega and  rho(1450) resonances.


pdgid: M009M0
text:
Using the GOUNARIS 1968 parametrization with the complex phase of the rho-omega interference and leaving  the masses and widths of the rho(1450), rho(1700), and rho(2150) resonances as free parameters of the fit.


pdgid: M009M0
text:
A fit of the SND data from 400 to 1000 MeV using parameters of the  rho(1450) and rho(1700) from a fit of the data of BARKOV 1985, BISELLO 1989 and ANDERSON 2000A.


pdgid: M009M0
text:
From a fit of the pion form factor in the energy range 0.32 < sqrt(s) < 1.2 GeV using  the GOUNARIS 1968 parametrization with the complex phase of the rho-omega  interference with omega and phi masses and widths constrained by the values and their  errors from PDG 2022, and leaving rho(1450), rho(1700) resonances as free parameters  of the fit. Systematic errors not estimated.


pdgid: M009M0
text:
Applies the Unitary & Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to  analyze the data of LEES 2012G and ABLIKIM 2016C.


pdgid: M009M0
text:
Applies the Unitary & Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to  analyze the data of ACHASOV 2006, AKHMETSHIN 2007, AUBERT 2009AS, and  AMBROSINO 2011A.


pdgid: M009M0
text:
From the fit to e+ e- --> pi+ pi- data from the compilations of HEYN 1981 and BARKOV 1985, including the GOUNARIS 1968 parametrization of the pion form factor.


pdgid: M009M5
text:
From the GOUNARIS 1968 parametrization of the pion form factor. The second error is a model error taking into account different parametrizations of the pion form factor.


pdgid: M009M5
text:
Applies the Unitary & Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to  analyze the data of FUJIKAWA 2008.


pdgid: M009M5
text:
From a fit of the model-independent parameterization of the pion form factor to the data of BARATE 1997M.


pdgid: M009M2
text:
From fit of 3-parameter relativistic P-wave Breit-Wigner to total mass distribution.  Includes BATON 1968, MILLER 1967B, ALFF-STEINBERGER 1966, HAGOPIAN 1966, HAGOPIAN 1966B, JACOBS 1966B, JAMES 1966, WEST 1966, BLIEDEN 1965 and CARMONY 1964.


pdgid: M009M0R
text:
Includes MALAMUD 1969, ARMENISE 1968, BACON 1967, HUWE 1967, MILLER 1967B, ALFF-STEINBERGER 1966, HAGOPIAN 1966, HAGOPIAN 1966B, JACOBS 1966B, JAMES 1966, WEST 1966, GOLDHABER 1964, ABOLINS 1963.


pdgid: M009M0R
text:
From a fit to pi+ pi- mass using rho(770) (parametrized with the Gounaris-Sakurai  approach), omega(782), and box anomaly  components.


pdgid: M009M0R
text:
From a fit to pi+ pi- mass using rho(770) (parametrized with the Gounaris-Sakurai  approach), omega(782), and rho(1450) components.


pdgid: M009M0R
text:
From fit of 3-parameter relativistic Breit-Wigner to helicity-zero part of P-wave intensity. CHABAUD 1983 includes data of GRAYER 1974.


pdgid: M009D
text:
From the combined fit of the tau- data from ANDERSON 2000A and SCHAEL 2005C and e+ e- data from the compilation of BARKOV 1985, AKHMETSHIN 2004, and ALOISIO 2005. Supersedes BARATE 1997M.


pdgid: M009D
text:
Includes MALAMUD 1969, ARMENISE 1968, BATON 1968, BACON 1967, HUWE 1967, MILLER 1967B, ALFF-STEINBERGER 1966, HAGOPIAN 1966, HAGOPIAN 1966B, JACOBS 1966B, JAMES 1966, WEST 1966, BLIEDEN 1965, CARMONY 1964, GOLDHABER 1964, ABOLINS 1963.


pdgid: M009D
text:
Applies the Unitary & Analytic Model of the pion electromagnetic form factor of DUBNICKA 2010 to  analyze the data of ACHASOV 2006, AKHMETSHIN 2007, AUBERT 2009AS, AMBROSINO 2011A,  and FUJIKAWA 2008.


pdgid: M009W0R
text:
From fit of 3-parameter relativistic Breit-Wigner to helicity-zero part of P-wave intensity.  CHABAUD 1983 includes data of GRAYER 1974.


pdgid: M009G1
text:
From a combined fit of CS(e+ e- --> eta gamma) with eta --> 3pi0 and eta --> pi+ pi- pi0, and fixing B(eta --> 3pi0) / B(eta --> pi+ pi- pi0) = 1.44+-0.04. Recalculated by us from the cross section at the peak. Supersedes ACHASOV 2000D and ACHASOV 2006A.


pdgid: M009G1
text:
The combined fit from 600 to 1380 MeV taking into account rho(770), omega(782), phi(1020), and rho(1450) (mass and width fixed at 1450 MeV and 310 MeV respectively).


pdgid: M009G2
text:
From the VMD model with the p{rho(770)}, omega(782), phi(1020) resonances, and an  additional resonance describing the total contribution of the rho(1450) and omega(1420)  states. Supersedes ACHASOV 2003.


pdgid: M009G2
text:
Using sigma(phi --> pi0 gamma) from ACHASOV 2000 and mass(rho) = 775.97  MeV in the model with the energy-independent phase of rho-omega interferenceequal to  (-10.2+-7.0)degree.


pdgid: M009R9
text:
Reanalysis of DRUZHININ 1984, DOLINSKY 1989, and DOLINSKY 1991 taking into account a triangle anomaly contribution.


pdgid: M009R7
text:
ACHASOV 2007B  reports [G(rho(770) --> eta gamma)/G(total)] * [B(rho(770) --> e+ e-)] = 1.32+-0.14+-0.08E-8 which we divide by our best value B(rho(770) --> e+ e-) = 4.72+-0.05E-5. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M009R7
text:
Reanalysis of DRUZHININ 1984, DOLINSKY 1989, and DOLINSKY 1991 taking into account a triangle anomaly contribution. Constructive rho-omega interference solution.


pdgid: M009R14
text:
This branching ratio includes the conventional VMD mechanism rho --> omega pi0, omega --> pi0 gamma, and the new decay mode rho --> f_0(500) gamma, f_0(500) --> pi0 pi0 with a branching ratio 2.0+1.1-0.9+-0.3E-5 differing from zero by 2.0 standard deviations.


pdgid: M009R14
text:
This branching ratio includes the conventional VMD mechanism rho --> omega pi0, omega --> pi0 gamma and the new decay mode rho --> f_0(500) gamma, f_0(500) --> pi0 pi0 with a branching ratio 1.9+0.9-0.8+-0.4E-5 differing from zero by 2.4 standard deviations. Supersedes ACHASOV 2000G.


pdgid: M009R5
text:
Result contains 11+-11% correction using SU(3) for central value.  The error on the correction takes account of possible rho-omega interference and the upper limit agrees with the upper limit of omega --> mu+ mu- from this experiment.


pdgid: M009R5
text:
But he even enlarges his error to take residual omega contamination into account.  Since his value is high, seems the other experiments also can't have too many omega's.  But maybe Hyams has additional mu's from rho --> pi pi, decaying pi's.


pdgid: M009R10
text:
From the cross section for e+ e- --> pi+ pi- pi0 with contributions from rho(770),  omega(782), phi(1020), omega(1420), and omega(1650). Statistical evidence is more  than  6 sigma.


pdgid: M001M
text:
From the combined fit of ANTONELLI 1992, ACHASOV 2001E, ACHASOV 2002E, and ACHASOV 2003D data on the pi+ pi- pi0 and ANTONELLI 1992 on the omega pi+ pi- final states. Supersedes ACHASOV 1999E and ACHASOV 2002E.


pdgid: M001M
text:
From a fit of the pion form factor in the energy range 0.32 < sqrt(s) < 1.2 GeV using  the GOUNARIS 1968 parametrization with the complex phase of the rho-omega  interference leaving rho(1450), rho(1700) resonances as free parameters of the fit.  Systematic errors not estimated.


pdgid: M001M
text:
The values were extracted from a dispersively improved Breit-Wigner parameterization and do not  include vacuum polarization. Inclusion of vacuum polarization gives 782.736+-0.024 MeV.


pdgid: M001M
text:
The omega mass was extracted from a dispersively improved Breit-Wigner parameterization, the  omega width fixed at 8.49+-0.08 MeV. The value does not include vacuum polarization which  would shift the mass to 781.81+-0.09+-0.03 MeV. The mixing parameter is assumed real valued.


pdgid: M001M
text:
The values were extracted from a dispersively improved Breit-Wigner parameterization and do not  include vacuum polarization.


pdgid: M001M
text:
From the rho-omega interference in the pi+ pi- mass spectrum using the Breit-Wigner for the omega and leaving its mass and width as free parameters of the fit.


pdgid: M001W
text:
The values were extracted from a dispersively improved Breit-Wigner parameterization and do not  include vacuum polarization. Inclusion of vacuum polarization gives 8.63+-0.05 MeV.


pdgid: M001R02
text:
From the cross section for e+ e- --> pi+ pi- pi0 with contributions from rho(770),  omega(782), phi(1020), omega(1420), and omega(1650).


pdgid: M001G2
text:
From a fit of  the cross section using a  VMD model  which includes the interference of the  omega and phi and non-resonant background, with some parameters, including phi mass and  width, fixed at their PDG 2022 values.


pdgid: M001G4
text:
From the VMD model with the interfering rho(770), omega(782), phi(1020), and an  additional resonance describing the total contribution of the rho(1450) and omega(1420)  states. Supersedes ACHASOV 2003.


pdgid: M001G4
text:
Using CS(phi --> pi0 gamma) from ACHASOV 2000 and mass(omega) = 782.57 MeV in the  model with the energy-independent phase of rho-omega interferenceequal to (-10.2+-7.0)degree.


pdgid: M001G5
text:
From a fit of the pion form factor in the energy range 0.32 < sqrt(s) < 1.2 GeV using  the GOUNARIS 1968 parametrization with the complex phase of the rho-omega  interference with omega and phi masses and widths constrained by the values and their  errors from PDG 2022, and leaving rho(1450), rho(1700) resonances as free parameters  of the fit.


pdgid: M001G5
text:
From a fit of the cross section in the energy range 0.525 < sqrt(s) < 0.883 GeV  parameterized by the sum of the Breit-Wigner amplitudes for the rho(770), omega and  rho(1450) resonances. The measured phase of the rho(770)--omega interference  is (110.7+-1.5+-1.0)degree.


pdgid: M001G5
text:
A simultaneous fit to e+ e- --> pi+ pi-, pi+ pi- pi0, pi0 gamma, eta gamma, K Kbar, and tau- --> pi- pi0 nu_tau data. Supersedes BENAYOUN 2010.


pdgid: M001G01
text:
From a fit of the real part of the vacuum polarization by a sum of the leptonic and hadronic  contributions, where the hadronic contribution is parametrized as a sum of Breit-Wigner resonances  omega(782), phi(1020) and using a GOUNARIS 1968 parametrization for the rho(770),  and a non-resonant term.


pdgid: M001R28
text:
Reanalysis of DRUZHININ 1984, DOLINSKY 1989, DOLINSKY 1991 taking into account the triangle anomaly contributions.


pdgid: M001R3
text:
From sigma(0)**omega pi0 --> pi0 pi0 gamma(mass(phi))/sigma(0)**omega pi0 --> pi+ pi- pi0 pi0(mass(phi)) with a phase-space correction factor of 1/1.023.


pdgid: M001R15
text:
From the m(pi+ pi-) spectrum taking into account the interference of the rho pi and omega pi amplitudes.


pdgid: M001R15
text:
ABLIKIM 2018C  reports [G(omega(782) --> pi+ pi-)/G(total)] * [B(eta^'(958) --> omega gamma)] = 3.25+-0.21+-0.52E-4 which we divide by our best value B(eta^'(958) --> omega gamma) = 2.52+-0.07E-2. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M001R15
text:
ABLIKIM 2018C  reports [G(omega(782) --> pi+ pi-)/G(total)] * [B(eta^'(958) --> omega gamma)] = 3.22+-0.21+-0.52E-4 which we divide by our best value B(eta^'(958) --> omega gamma) = 2.52+-0.07E-2. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M001R15
text:
Dispersive analysis. Value extracted from average of data from AUBERT 2009AS, AKHMETSHIN 2007,  ACHASOV 2006, AMBROSINO 2011A, BABUSCI 2013D, ABLIKIM 2016B normalised by  PDG 2016 evaluation for Gamma(omega --> e+ e-).


pdgid: M001R15
text:
Re-evaluated under G(omega(782) --> pi+ pi-)/G(omega(782) --> pi+ pi- pi0) by BEHREND 1971 using more accurate omega --> rho photoproduction cross-section ratio.


pdgid: M001R19
text:
ACHASOV 2007B  reports [G(omega(782) --> eta gamma)/G(total)] * [B(omega(782) --> e+ e-)] = 3.10+-0.31+-0.11E-8 which we divide by our best value B(omega(782) --> e+ e-) = 7.41+-0.19E-5. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M001R19
text:
Depending on the degree of coherence with the flat eta eta gamma background and using B(omega --> pi0 gamma)=8.5+-0.5E-2.


pdgid: M001R12
text:
DZHELYADIN 1981B does not say how normalization was obtained.  It may well be the same as in DZHELYADIN 1979 below, in which case we cannot combine G(omega(782) --> pi0 mu+ mu-)/G(omega(782) --> mu+ mu-) and [G(omega(782) --> pi0 mu+ mu-)/G(total) to obtain Gamma(15).  Also, if this is the case, then mu-e universality was used to obtain [G(omega(782) --> pi0 mu+ mu-)/G(total) from a measurement of [G(omega(782) --> pi0 mu+ mu-)G(omega(782) --> mu+ mu-)].  FCP


pdgid: M001R29
text:
In the model assuming the rho --> pi0 pi0 gamma decay via the omega pi and f_0(500) gamma mechanisms.


pdgid: M001R30
text:
Assuming lepton universality in the decay omega --> lepton+ lepton- and correcting for  different phase space between electron and muon final states.


pdgid: M001R35
text:
STAROSTIN 2009   reports [G(omega(782) --> eta pi0)/G(omega(782) --> pi0 gamma)] * [B(eta --> 2gamma)] < 1.01E-3 which we divide by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M001LAM
text:
ARNALDI 2016 reports Lambda**-2(omega) = 2.223+-0.026+-0.037  GeV**-2 which we converted to the quoted Lambda value.


pdgid: M001LAM
text:
ARNALDI 2009 reports Lambda**-2(omega) = 2.24+-0.06+-0.02 GeV**-2  which we converted to the quoted Lambda value.


pdgid: M001A02
text:
ADLARSON 2017B reports Lambda**-2(omega pi0) = 1.99+-0.21 GeV**-2  that we converted to the quoted Lambda value.


pdgid: M001A00
text:
Keeping a term linear in Z only. A fit with the terms proportional to Z and Z**3/2 gives  alpha = 0.133+-0.041 and beta = 0.037+-0.054.


pdgid: M002M
text:
Using eta^' decays into neutrals. Not independent of the other listed BASILE 1971 eta^' mass measurement.


pdgid: M002G2
text:
Reevaluated by us using B(eta --> gamma gamma) = (39.21+-0.34)%. Supersedes ANTREASYAN 1987 and KARCH 1990.


pdgid: M002G01
text:
AKHMETSHIN 2015   reports [G(eta^'(958) --> pi+ pi- eta) * G(eta^'(958) --> e+ e-)/G(total)] * [B(eta --> 2gamma)] < 4.1E-4 eV which we divide by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R19
text:
WICHT 2008   reports [G(eta^'(958) --> gamma gamma)/G(total)] * [B(B+ --> eta^' K+)] = 1.40+0.16-0.15+0.15-0.12E-6 which we divide by our best value B(B+ --> eta^' K+) = 7.04+-0.25E-5. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R50
text:
ABLIKIM 2024AK reports 2.16+-0.12+-0.06E-5 from a measurement of [G(eta^'(958) --> pi+ pi- mu+ mu-)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R50
text:
ABLIKIM 2021I  reports 1.97+-0.33+-0.19E-5 from a measurement of [G(eta^'(958) --> pi+ pi- mu+ mu-)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.21+-0.17E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R03
text:
NAIK 2009   reports [G(eta^'(958) --> pi+ pi- mu+ mu-)/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] < 1.3E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R01
text:
NAIK 2009   reports [G(eta^'(958) --> pi+ pi- pi0)/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] = 21+6-5+-2E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36+-0.18E-2. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R24
text:
ABLIKIM 2024F  reports 8.56+-0.25+-0.23E-5 from a measurement of [G(eta^'(958) --> 2(pi+ pi-))/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R24
text:
ABLIKIM 2014M  reports [G(eta^'(958) --> 2(pi+ pi-))/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] = 4.40+-0.35+-0.30E-7 which we divide by our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R04
text:
NAIK 2009   reports [G(eta^'(958) --> 2(pi+ pi-))/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] < 1.4E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R51
text:
ABLIKIM 2024F  reports 2.12+-0.12+-0.10E-4 from a measurement of [G(eta^'(958) --> pi+ pi- 2pi0)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R51
text:
ABLIKIM 2014M  reports [G(eta^'(958) --> pi+ pi- 2pi0)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] = 9.38+-1.79+-0.89E-7 which we divide by our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R05
text:
NAIK 2009   reports [G(eta^'(958) --> pi+ pi- 2pi0)/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] < 15E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R06
text:
NAIK 2009   reports [G(eta^'(958) --> 2(pi+ pi-) pi0)/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] < 11E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R08
text:
NAIK 2009   reports [G(eta^'(958) --> 3(pi+ pi-))/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] < 3.0E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R12
text:
ABLIKIM 2024AK reports 2.45+-0.02+-0.08E-3 from a measurement of [G(eta^'(958) --> pi+ pi- e+ e-)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R02
text:
NAIK 2009   reports [G(eta^'(958) --> pi+ pi- e+ e-)/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] = 14+7-5+-3E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36+-0.18E-2. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R40
text:
ABLIKIM 2024M  reports 4.83+-0.07+-0.14E-4 from a measurement of [G(eta^'(958) --> gamma e+ e-)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R58
text:
ABLIKIM 2024F  reports <1.24E-5 from a measurement of [G(eta^'(958) --> 4pi0)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28E-3.


pdgid: M002R39
text:
Using width(eta^'(958)) = 198+-9 keV, B(eta^'(958) --> pi+ pi- eta) = (42.9+-0.7)%,  and  B(eta --> gamma gamma) = (39.41+-0.20)%.


pdgid: M002R68
text:
ABLIKIM 2022E  reports 4.5+-1.0+-0.5E-6 from a measurement of [G(eta^'(958) --> e+ e- e+ e-)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] assuming B(J/psi(1S) --> gamma eta^'(958)) = 5.25+-0.07E-3, which we rescale to our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28+-0.06E-3. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M002R09
text:
NAIK 2009   reports [G(eta^'(958) --> invisible)/G(eta^'(958) --> pi+ pi- eta)] / [B(eta --> 2gamma)] < 5.4E-3 which we multiply by our best value B(eta --> 2gamma) = 39.36E-2.


pdgid: M002R20
text:
ABLIKIM 2011G  reports [G(eta^'(958) --> pi+ pi-)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] < 2.84E-7 which we divide by our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28E-3.


pdgid: M002R53
text:
ABLIKIM 2011G  reports [G(eta^'(958) --> pi0 pi0)/G(total)] * [B(J/psi(1S) --> gamma eta^'(958))] < 2.31E-6 which we divide by our best value B(J/psi(1S) --> gamma eta^'(958)) = 5.28E-3.


pdgid: M002R73
text:
For a pseudoscalar ALP, with a mass in the range 0 -- 500 MeV. The measured limit at the  90% credibility level as a function of the mass of ALP ranges from 0.1E-3 to 7.8E-3.


pdgid: M002A0
text:
From the data of DAUBER 1964, RITTENBERG 1969, AGUILAR-BENITEZ 1972B, JACOBS 1973, and DANBURG 1973.


pdgid: M002FFL
text:
In the single-pole Ansatz where slope = 1/(Lambda**2 + gamma**2) with Lambda, gamma being a Breit-Wigner mass, width for the effective contributing vector meson.


pdgid: M002FFL
text:
From a weighted average of the eta^' --> pi+ pi- e+ e- and eta^' --> pi+ pi- mu+ mu-  values. The uncertainty is obtained by combining statistical and systematic uncertainties. TFF  slope values go between 1.10+-0.21 GeV**-2 and 1.61+-0.71 GeV**-2 for eta^' --> pi+ pi- e+ e-,  and between 2.37+-0.49 GeV**-2 and 2.88+-0.25 GeV**-2 for eta^' --> pi+ pi- mu+ mu-,  according to the solution of the fitting function model.


pdgid: M003PP
text:
Using the GKPY equations as GARCIA-MARTIN 2011, but with different treatment of kaon  thresholds and input for pi pi/K Kbar T-matrix from HOFERICHTER 2016.


pdgid: M003PP
text:
5 poles, 5 channels, including scattering data from HYAMS 1975 (pi pi),  LONGACRE 1986 (K Kbar),    BINON 1983 (eta eta), and BINON 1984C (eta eta^'). Based on 18.5k events.  Second solution 977.8+-1.7 MeV.


pdgid: M003PP
text:
Reanalysis of the K_{{e4}} data of BATLEY 2010C and the pi N --> pi pi N data of   HYAMS 1973, GRAYER 1974, and PROTOPOPESCU 1973 using Roy equations.


pdgid: M003PP
text:
Average of the analyses of three data sets in the K-matrix       model. Uses the data of  BATLEY 2008A, HYAMS 1973 , and GRAYER 1974 ,   partially  of  COHEN 1980   or  ETKIN 1982B.


pdgid: M003M1
text:
From the  D+- --> K+- K+ K- Dalitz plot fit with the Triple-M amplitude in the multimeson  model of AOUDE 2018.


pdgid: M003M1
text:
Breit-Wigner mass. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio g(f_0() K K)/g(f_0() pi pi) = 0.


pdgid: M003M1
text:
FLATTE 1976 parameterization.  g(f_0() pi pi) = 329+-96 MeV/c**2 assuming g(f_0() K Kbar)/g(f_0() pi pi)=2.


pdgid: M003M1
text:
Breit-Wigner mass. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio g(f_0() K K)/g(f_0() pi pi) = 4.21+-0.25+-0.21 from ABLIKIM 2005.


pdgid: M003M1
text:
K-matrix pole from combined analysis of pi- p --> pi0 pi0 n, pi- p --> K Kbar n, pi+ pi- --> pi+ pi-, pbar p --> pi0 pi0 pi0, pi0 eta eta, pi0 pi0 eta, pi+ pi- pi0, K+ K- pi0, K0S K0S pi0, K+ K0S pi- at rest, pbar n --> pi- pi- pi+, K0S K- pi0, K0S K0S pi- at rest.


pdgid: M003M1
text:
From the negative interference with the f_{{0}}(500) meson of AITALA 2001B using the ACHASOV 1989 parameterization for the f_0(980), a Breit-Wigner for the f_{{0}}(500), and ACHASOV 2001F for the rho pi contribution.


pdgid: M003M1
text:
From the combined fit of the photon spectra in the reactions e+ e- --> pi+ pi- gamma, pi0 pi0 gamma.


pdgid: M003M1
text:
On sheet II in a 4-pole solution, the other poles are found on sheetIII at (953-55i) MeV and on sheetIV at (938-35i) MeV.


pdgid: M003M1
text:
On sheet II in a 2 pole solution. The other pole is found on sheetIII at (797-185i) MeV and can be interpreted as a shadow pole.


pdgid: M003W1
text:
Breit-Wigner pi pi width. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio g(f_0() K K)/g(f_0() pi pi) = 0.


pdgid: M003W1
text:
Breit-Wigner pi pi width. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio g(f_0() K K)/g(f_0() pi pi) = 4.21+-0.25+-0.21 from ABLIKIM 2005.


pdgid: M003W1
text:
From coupled channel fit to the HYAMS 1973 and PROTOPOPESCU 1973 data. With a simultaneous fit to the pi pi phase-shifts, inelasticity and to the K0S K0S invariant mass.


pdgid: M003W4
text:
Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio g(f_0() K K)/g(f_0() pi pi) = 0.


pdgid: M003W4
text:
Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio g(f_0() K K)/g(f_0() pi pi) = 4.21+-0.25+-0.21 from ABLIKIM 2005.


pdgid: M003W4
text:
From amplitude analysis of BOYER 1990 and MARSISKE 1990, data corresponds to resonance parameters m = 989 MeV, Gamma = 61 MeV.


pdgid: M003R1
text:
Recalculated by us using Gamma(K+ K-) / Gamma(pi+ pi-) = 0.69+-0.32 from AUBERT 2006O and isospin relations.


pdgid: M003R1
text:
From a combined K-matrix analysis of Crystal Barrel (p pbar --> pi0 pi0 pi0, pi0 eta eta, pi0 pi0 eta), GAMS (pi p --> pi0 pi0 n, eta eta n, eta eta^' n), and BNL (pi p --> K Kbar n) data.


pdgid: M036PP
text:
Pole mass on sheet closest to the physical axis - the more remote pole is extracted at (1004.1+-1.5+-6.5) -  i(48.6+-1.2+-3.4) MeV.


pdgid: M036PP
text:
T-matrix pole on sheet II. Parameterizes couplings to Kbar K, pi eta, and pi eta^'.  Uses AMSLER 1994D and ABELE 1998.


pdgid: M036PP
text:
Reanalysis of data from LINGLIN 1973, ESTABROOKS 1978, and ASTON 1988 in the  unitarized ChPT model.


pdgid: M036M1
text:
From a fit with the S-wave amplitude including two interfering Breit-Wigners plus a background term.


pdgid: M036M1
text:
Breit-Wigner fit, average between a_{{0}}()+- and a_{{0}}()0. The fit favors a slightly heavier a_{{0}}()+-.


pdgid: M036M2
text:
From theD+- --> K+- K+ K- Dalitz plot fit with the Triple-M amplitude in the multimeson  model of AOUDE 2018.


pdgid: M036M2
text:
Note on J**P.  Main argument for 0**+** is small Q value.  Isotropy of decay distribution in pbar p at rest proves nothing.  See discussion by Rosenfeld (Oxford) and Butterworth (Heidelberg).


pdgid: M036R2
text:
Residues from T-matrix pole with 2 poles, 2 channels. Solution on adjacent sheet 0.149+-0.001+-0.039.


pdgid: M036R00
text:
From an amplitude analysis of the D0 --> K- pi+ eta decay in a three-channel Flatte model with  a 10.1 sigma significance. Earlier observed by ABLIKIM 2017K in the chi_c1 --> eta pi+ pi-  decay with a 8.9 sigma significance.


pdgid: M004M
text:
From a fit of the cross section in the energy region 1.000 < sqrt(s) < 1.100 GeV using  a vector meson dominance model with contribution from phi(1020), rho(770), omega(782)  and higher vector resonances. The the first three points near the threshold are removed in the fit.


pdgid: M004M
text:
Average of KOZYREV 2016 and KOZYREV 2018 values taking into account the correlated  uncertainties. Supersedes individual KOZYREV 2016 and KOZYREV 2018 results.


pdgid: M004M
text:
Using a vector meson dominance model with contribution from phi(1020) and higher mass  excitations of rho(770), omega(782), and phi(1020).


pdgid: M004M
text:
Using a phenomenological model based on KUHN 1990 with a sum of Breit-Wigner resonances for rho(770), omega(782), phi(1020) and their higher mass excitations.


pdgid: M004M
text:
From the combined fit assuming that the total phi(1020) production cross section is saturated by those of K+ K-, K_S K_L, pi+ pi- pi0, and eta gamma decays modes and using ACHASOV 2000B for the eta gamma decay mode.


pdgid: M004M
text:
The values were extracted from a dispersively improved Breit-Wigner parameterization and do not  include vacuum polarization. Inclusion of vacuum polarization gives 1019.457+-0.020 MeV.


pdgid: M004M
text:
From the D+- --> K+- K+ K- Dalitz plot fit with the Triple-M amplitude in the multimeson  model of AOUDE 2018.


pdgid: M004W5
text:
Weighted average of  and sqrt(width(e e) width(mu mu)) from AMBROSINO 2005 assuming lepton universality.


pdgid: M004W8
text:
Combined analysis of the CMD-2 data on phi --> K+ K-, K0S K0L, pi+ pi- pi0, eta gamma assuming that the sum of their branching fractions is 0.99741+-0.00007.


pdgid: M004W8
text:
From forward-backward asymmetry and using Gamma(total) = 4.26+-0.05 MeV from the 2004 edition of this Review.


pdgid: M004G01
text:
Using a phenomenological model based on KUHN 1990 with a sum of Breit-Wigner resonances for rho(770), omega(782), phi(1020) and their higher mass excitations. The first error combines statistical and systematic uncertainties. The second one is due to the parametrization of the charged kaon form factor and mass calibration.


pdgid: M004G3
text:
From the VMD model with the interfering rho(770), omega(782), phi(1020) resonances, and  an additional resonance describing the total contribution of the rho(1450) and omega(1420)  states. Supersedes ACHASOV 2000.


pdgid: M004G4
text:
From a fit of the pion form factor in the energy range 0.32 < sqrt(s) < 1.2 GeV using  the GOUNARIS 1968 parametrization with the complex phase of the rho-omega  interference with omega and phi masses and widths constrained by the values and their  errors from PDG 2022, and leaving rho(1450), rho(1700) resonances as free parameters  of the fit. A fit without the constraints from PDG 2022 gives a value Gamma(e+ e-)xGamma(pi+ pi-)/Gamma(total)**2  = 3.65+-0.24E-8.


pdgid: M004G4
text:
A simultaneous fit to e+ e- --> pi+ pi-, pi+ pi- pi0, pi0 gamma, eta gamma, K Kbar, and tau- --> pi- pi0 nu_tau data.


pdgid: M004G11
text:
AMBROSINO 2008G  reports [G(phi(1020) --> omega pi0)/G(total) * G(phi(1020) --> e+ e-)/G(total)] * [B(omega(782) --> pi+ pi- pi0)] = 1.22+-0.13+-0.08E-8 which we divide by our best value B(omega(782) --> pi+ pi- pi0) = 89.2+-0.7E-2. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M004R19
text:
The prediction taking into account phase-space difference, radiative corrections, isospin breaking,  and the Sommerfeld-Gamow-Sakharov factor gives 0.630.


pdgid: M004R5
text:
This is probably not affected by their controversial background subtraction; the value is from their numbers of K_1 K_2 vs K+ K- events.


pdgid: M004R3
text:
Using Gamma(phi)= 4.1 MeV.  If interference between the rho pi and 3pi modes is neglected, the fraction of the rho pi is more than 80% at the 90% confidence level.


pdgid: M004R46
text:
Adding the direct and omega pi contributions and considering the interference between the rho pi and pi+ pi- pi0.


pdgid: M004R11
text:
ACHASOV 2007B  reports [G(phi(1020) --> eta gamma)/G(total)] * [B(phi(1020) --> e+ e-)] = 4.050+-0.067+-0.118E-6 which we divide by our best value B(phi(1020) --> e+ e-) = 2.964+-0.033E-4. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M004R16
text:
Using total width 4.2 MeV.  They detect 3pi mode and observe significant interference with omega tail.  This is accounted for in the result quoted above.


pdgid: M004R24
text:
Using B(eta --> gamma gamma) = (39.25+-0.32)%, B(phi --> eta gamma) = (1.26+-0.06)%, and B(phi --> e+ e-) = 3.00+-0.06E-4.


pdgid: M004R24
text:
The average of the branching ratios separately obtained from the eta --> gamma gamma, 3pi0, pi+ pi- pi0 decays.


pdgid: M004R24
text:
From eta --> gamma gamma decays and using B(eta --> gamma gamma) = 39.33+-0.25E-2, B(eta --> pi+ pi- gamma) = 4.75+-11E-2, and B(phi --> eta gamma) = 1.297+-0.033E-2.


pdgid: M004R24
text:
From eta --> 3pi0 decays and using B(pi0 --> gamma gamma) = 98.798+-0.033E-2, B(eta --> 3pi0) = 32.24+-0.29E-2, B(eta --> pi+ pi- gamma) = 4.75+-0.11E-2, and B(phi --> eta gamma) = 1.297+-0.033E-2.


pdgid: M004R24
text:
From eta --> pi+ pi- pi0 decays and using B(pi0 --> gamma gamma) = 98.798+-0.033E-2, B(pi0 --> e+ e- gamma) = 1.198+-0.032E-2, B(eta --> pi+ pi- pi0) = 23.0+-0.4E-2, B(phi --> pi+ pi- pi0) = 15.5+-0.6E-2, and B(phi --> eta gamma) = 1.297+-0.033E-2.


pdgid: M004R12
text:
For E(gamma)>20 MeV and assuming that B(phi(1020) --> f_0(980) gamma) is negligible. Supersedes AKHMETSHIN 1997C.


pdgid: M004R30
text:
Obtained by the authors taking into account the pi+ pi- decay mode. Includes a component due to pi pi production via the f_{{0}}(500) meson. Supersedes ALOISIO 2002D.


pdgid: M004R30
text:
From the negative interference with the f_{{0}}(500) meson of AITALA 2001B using the ACHASOV 1989 parameterization for the f_0(980), a Breit-Wigner for the f_{{0}}(500), and ACHASOV 2001F for the rho pi contribution. Superseded by AMBROSINO 2007.


pdgid: M004R30
text:
Assuming that the pi0 pi0 gamma final state is completely determined by the f_0() gamma mechanism, neglecting the decay B(phi --> K Kbar gamma) and using B(f_0() --> pi+ pi-)= 2B(f_0() --> pi0 pi0).


pdgid: M004R22
text:
Using the cross section at the phi meson peak CS(phi) = 4172+-42 nb, the nonresonant  cross section CS(0) = 1.263+-0.027 nb and Re(Z) = 0.146+-0.030, Im(Z) = -0.002+-0.024 for the  complex amplitude of the phi --> pi+ pi- pi+ pi- transition.


pdgid: M004R31
text:
Using B(pi0 --> gamma gamma) = 0.98798+-0.00032, B(phi --> eta gamma) = 1.297+-0.033E-2, and B(eta --> pi+ pi- gamma) = 4.75+-0.11E-2.


pdgid: M004R32
text:
Using B(phi --> eta gamma) = (1.304+-0.025)%, B(eta --> 3pi0) = (32.56+-0.23)%, and B(eta --> gamma gamma) = (39.31+-0.20)%.


pdgid: M004R32
text:
Using B(phi --> eta gamma) = (1.304+-0.025)%,  B(eta --> 3pi0) = (32.56+-0.23)%, and  B(eta --> pi+ pi- pi0) = (22.73+-0.28)%.


pdgid: M004R47
text:
Using results of ALOISIO 2002D and assuming that f_{{0}}(980) decays into pi pi only and a_{{0}}(980) into eta pi only.


pdgid: M004R25
text:
AMBROSINO 2007A  reports [G(phi(1020) --> eta^'(958) gamma)/G(total)] / [B(phi(1020) --> eta gamma)] = 4.77+-0.09+-0.19E-3 which we multiply by our best value B(phi(1020) --> eta gamma) = 1.306+-0.024E-2. Our first error is their experiment's error and our second error is the systematic error from using our best value.


pdgid: M004R43
text:
Using various branching ratios of K(S)0, K(L)0, eta, eta^' from the 2000 edition (The European Physical Journal  C15 1 (2000)) of this Review.


pdgid: M004R01
text:
For a narrow vector U with mass between 5 and 470 MeV, from the combined analysis of eta --> pi+ pi- pi0 and eta --> pi0 pi0 pi0 from ARCHILLI 2012. Measured 90% CL limits as a function of mass(U) range from 2.2E-8 to 10**-6.


pdgid: M010W
text:
From a fit of the K- K^*()0 distribution assuming mass(a_{{1}})= 1230 MeV and purely resonant production of the K- K^*()0 system.


pdgid: M010R4
text:
Uses multichannel Aitchison-Bowler model (BOWLER 1975). Uses data from GAVILLET 1977, DAUM 1980, and DANKOWYCH 1981.


pdgid: M010R10
text:
The a_1(1260)- --> f_0(980) pi- decay mode via the Triangle Singularity mechanism from  MIKHASENKO 2015 and ACETI 2016 explains the a_{{1}}(1420)- signal observed by  ADOLPH 2015C.


pdgid: M010R13
text:
Using structure functions from KUHN 1992 and DECKER 1993A and B(tau- --> K- pi- K+ nu_tau) = (0.155+-0.006+-0.009)% from BRIERE 2003.


pdgid: M005M
text:
Averaged over six nuclear targets, no statistically significant dependence on target nucleus observed.


pdgid: M005W8
text:
Based on a K-matrix analysis of BELLE data from MORI 2007, UEHARA 2008A, UEHARA 2009 and UEHARA 2013. The width is derived for the pole on the third sheet which is closest to the physical axis. Supersedes PENNINGTON 2008.


pdgid: M005G02
text:
Including interference with the f_{{2}}^'(1525) (parameters fixed to the values from the 2008 edition of this review, PDG 2008) and f_{{0}}(Y).


pdgid: M005HR0
text:
Based on a K-matrix analysis of BELLE data from MORI 2007, UEHARA 2008A, UEHARA 2009 and UEHARA 2013. The width is derived for the pole on the third sheet which is closest to the physical axis.


pdgid: M005R10
text:
Residue from T-matrix pole, 4 poles, 4 channels, including scattering data from HYAMS 1975  (pi pi), LONGACRE 1986 (K Kbar), BINON 1983 (eta eta).


pdgid: M005R1
text:
LOUIE 1974 was quoted as 0.065 in PDG 1974.  Factor 2/3 to go from pi+ pi- --> pi pi forgotten.  Mike L.


pdgid: M008R2
text:
CORDEN 1978 assumes low-mass eta pi pi region is dominantly 1**++.  See BARBERIS 1998C and MANAK 2000A for discussion.


pdgid: M008R01
text:
Value obtained selecting the region corresponding to f_{{0}}(980) in the pi+ pi- mass spectrum. The sytematic error includes the uncertainty on the partial width f_1() --> eta pi pi obtained from PDG 2010 data.


pdgid: M008R13
text:
Using B(J/psi --> gamma f_1(1285) --> gamma gamma rho0)=0.25E-4 and B(J/psi --> gamma f_1(1285) --> gamma 2pi+ 2pi-)=0.55E-4 given by MIR 1988.


pdgid: M008R12
text:
Using B(J/psi --> gamma f_1(1285) --> gamma gamma rho0)=0.25E-4 and B(J/psi --> gamma f_1(1285) --> gamma K Kbar pi)=<0.72E-3.


pdgid: M008R00
text:
ACHASOV 2020 reports two candidate events corresponding to a significance of 2.5 sigma  and the branching fraction of 5.1+3.7-2.7E-9.


pdgid: M037M
text:
PWA analysis of AUGUSTIN 1992 assigns 0**-+ quantum numbers to this state rather than 1**++ as before.


pdgid: M058M
text:
Uses multichannel Aitchison-Bowler model (BOWLER 1975). Uses data from DAUM 1980 and DANKOWYCH 1981.


pdgid: M012PP
text:
Extraction based on a combined fit of Crystal Barrel and pi pi scattering data (ALBRECHT 2020), and  COMPASS data (ADOLPH 2015), using a coupled-channel model of eta pi, eta^' pi and  K Kbar systems.


pdgid: M012PP
text:
Coupled-channel analysis of both the eta pi and eta^' pi systems using ADOLPH 2015    data. Supersedes JACKURA 2018. Performed by JPAC.


pdgid: M012M3
text:
ADOLPH 2015 value is derived from a Breit-Wigner fit with mass-dependent width taking the eta pi and rho pi channels into account.


pdgid: M012W6
text:
From analysis of L3 data at 91 and 183 -- 209 GeV, using Gamma(a_2(1320) --> gamma gamma) = 0.91 keV and SU(3) relations.


pdgid: M012R12
text:
KARSHON 1974 suggest an additional I = 0 state strongly coupled to omega pi pi which could explain discrepancies in branching ratios and masses.  We use a central value and a systematic spread.


pdgid: M012R12
text:
Decays to b_1(1040) pi, b_1 --> omega pi. Error increased to account for possible systematic errors of complicated analysis.


pdgid: M012R14
text:
From T-matrix pole based on combined fit of Crystal Barrel and pi pi scattering  data      (ALBRECHT 2020), and  COMPASS data (ADOLPH 2015), using a coupled-channel model of     eta pi,  eta^' pi and K Kbar  systems.


pdgid: M012R13
text:
Using B(eta^' --> pi+ pi- eta) = 0.441, B(eta --> gamma gamma) = 0.389 and B(eta --> pi+ pi- pi0) = 0.236.


pdgid: M147PP
text:
T-matrix pole, 5 poles, 5 channels, including scattering data from HYAMS 1975 (pi pi),  LONGACRE 1986 (K Kbar), BINON 1983 (eta eta), and BINON 1984C (eta eta^').


pdgid: M147PP
text:
Coupled-channel analysis of pbar p --> 3pi0, pi0 eta eta, and pi0 pi0 eta on sheetIV. Demonstrates explicitly that f_{{0}}(500) and f_{{0}}(1370) are two different poles.


pdgid: M147G01
text:
Including interference with the f_{{2}}^'(1525) (parameters fixed to the values from the 2008 edition of this review, PDG 2008) and f_{{2}}(1270). May also be the f_{{0}}(1500).


pdgid: M147R14
text:
From a combined K-matrix analysis of Crystal Barrel (0. p pbar --> pi0 pi0 pi0, pi0 eta eta, pi0 pi0 eta), GAMS (pi p --> pi0 pi0 n, eta eta n, eta eta^' n), and BNL (pi p --> K Kbar n) data.


pdgid: M027M4
text:
From fit to the a_0(980) pi **0**-+ partial wave. Cannot rule out a a_0(980) pi **1**++ partial wave.


pdgid: M027M6
text:
These experiments identify only one pseudoscalar in the 1400 -- 1500 range. Data could also refer to eta(1475).


pdgid: M027R7
text:
Using B(J/psi --> gamma eta(1405) --> gamma K Kbar pi)=4.2E-3 and B(J/psi --> gamma eta(1405) --> gamma gamma rho0)=6.4E-5.


pdgid: M027R00
text:
ABLIKIM 2024I reports B(J/psi -->  e+ e- eta(1405) --> f_0(980) pi0 --> pi+ pi- pi0)  =  2.04+-0.20+-0.08E-7.


pdgid: M027R00
text:
ABLIKIM 2012E reports B(J/psi --> gamma eta(1405) --> f_0(980) pi0 --> pi+ pi- pi0) =  1.5+-0.11+-0.11E-5 and B(J/psi --> gamma eta(1405) --> f_0(980) pi0 --> pi0 pi0 pi0) =  7.10+-0.82+-0.72E-6.


pdgid: M027R00
text:
ABLIKIM 2017AJ reports B(psi(2S) --> gamma eta(1405) --> gamma f_0(980) pi0 --> gamma pi+ pi- pi0) <  5.0E-7.


pdgid: M027R14
text:
Constructive interference between X(1835) and eta(1405)/eta(1475) decays to gamma phi is  assumed. Also see eta(1475). ABLIKIM 2018I reports the inverse as 11.10+-3.5.


pdgid: M027R14
text:
Destructive interference between X(1835) and eta(1405)/eta(1475) decays to gamma phi is  assumed. Also see eta(1475). ABLIKIM 2018I reports the inverse as 7.53+-2.49.


pdgid: M027R14
text:
Calculated by us from B(J/psi --> eta(1405) gamma --> phi gamma gamma) < 0.82E-4 and B(J/psi --> eta(1405) gamma --> rho0 gamma gamma) = 1.07+-0.17+-0.11E-4.


pdgid: M109M
text:
From a partial wave analysis of the systems (gamma X), with X --> eta^' eta^', and  (eta^' X), with X --> gamma eta^' in the decay J/psi --> gamma eta^' eta^'. The  intermediate resonance X is parametrized by a constant-width, relativistic Breit-Wigner.


pdgid: M006R6
text:
Calculated using G(a_0(980) --> K Kbar)/G(a_0(980) --> eta pi) = 0.24+-0.07 for a_{{0}}(980) fractions.


pdgid: M125M
text:
From a fit of the interfering omega(1420) and omega(1650) with a relative phase of pi  and other parameters floating.


pdgid: M125M
text:
From a fit with contributions from omega(782), phi(1020), omega(1420), and omega(1650). See ACHASOV 2020A for a further analysis of the pi+ pi- pi0 data.


pdgid: M125M
text:
Using the data of AKHMETSHIN 2000D and ANTONELLI 1992.  The rho pi dominance for the energy dependence of the omega(1420) and omega(1650) width assumed.


pdgid: M125M
text:
From a fit to two Breit-Wigner functions interfering between them and with the omega,phi tails with fixed (+,-,+) phases.


pdgid: M125W
text:
From a fit with contributions from omega(1420), omega(1650), and phi(1680). The mass of  omega(1420) is fixed to the PDG 2018 value of 1420 MeV.


pdgid: M125W
text:
From a fit of a VMD model with two effective resonances  with masses of 1450 MeV and 1700 MeV to  describe the excited vector states omega(1420), rho(1450), omega(1650), and  rho(1700). Systematic errors not evaluated.


pdgid: M125G6
text:
From a fit with contributions from omega(1420), omega(1650), and phi(1680). The mass of  omega(1420) is fixed to the PDG 2018 value of 1420 MeV. Fixing also the width of  omega(1420) to the PDG 2018 value of 220 MeV results in 3.0+-1.6E-8 measurement.


pdgid: M125G6
text:
From a fit of the interfering omega(1420) and omega(1650) with a relative phase of pi  and other parameters  floating. From an alternative fit Gamma(omega(1420) --> omega eta)/Gamma(total)xGamma(omega(1420) --> e+ e-) =  5.3+-1.6 eV.


pdgid: M125G6
text:
From a fit with contributions from omega(1420), omega(1650), and phi(1680). The mass  and the width of omega(1420) are fixed to the 2014 edition (PDG 2014) of this review.


pdgid: M149R3
text:
Using results on pbar p --> a_0(1450)0 pi0, a_0(1450) --> eta pi0 from ABELE 1996C and assuming the omega rho mechanism for the omega pi pi state.


pdgid: M105M1
text:
Mass and width of the rho(770) fixed at 775 and 149 MeV, respectively; solution 2 of model 2,  eta --> gamma gamma decays used.


pdgid: M105M1
text:
From the combined fit of AULCHENKO 2015 and ACHASOV 2018 in the model with the  interfering rho(1450), rho(1700) and rho(2150) with the parameters of the rho(1450)  and rho(1700) floating and the mass and width of the rho(2150) fixed at 2155 MeV and 320  MeV, respectively. The phases of the resonances are pi, 0 and pi, respectively.


pdgid: M105M1
text:
Using the data of AKHMETSHIN 2001B on e+ e- --> eta gamma, AKHMETSHIN 2000D and ANTONELLI 1988 on e+ e- --> eta pi+ pi-.


pdgid: M105M1
text:
Using the data of ANTONELLI 1988, DOLINSKY 1991, and AKHMETSHIN 2000D. The energy-independent width of the rho(1450) and rho(1700) mesons assumed.


pdgid: M105M3
text:
From a phenomenological model based on vector meson dominance with interfering rho(770),  rho(1450), and rho(1700). The rho(1700) mass and width are fixed at 1720 MeV and 250  MeV, respectively. Systematic uncertainties not estimated. Supersedes ACHASOV 2013.


pdgid: M105M3
text:
Using Breit-Wigner parameterization of the rho(1450) and assuming equal probabilities of the rho(1450) --> pi pi and rho(1450) --> omega pi decays.


pdgid: M105M3
text:
From a phenomenological model based on vector meson dominance with the interfering rho(1450) and rho(1700) and their widths fixed at 400 and 250 MeV, respectively. Systematic uncertainty not estimated.


pdgid: M105M3
text:
Using the data of AKHMETSHIN 2003B and BISELLO 1991B assuming the omega pi0 and pi+ pi- mass dependence of the total width.  rho(1700) mass and width fixed at 1700 MeV and 240 MeV, respectively.


pdgid: M105M3
text:
Using Breit-Wigner parameterization of the rho(1450) and assuming the omega pi- mass dependence for the total width.


pdgid: M105M3
text:
Mass-independent width parameterization.  rho(1700) mass and width fixed at 1700 MeV and 235 MeV respectively.


pdgid: M105M5
text:
From a fit of the pion form factor using the GOUNARIS 1968 parametrization with the complex  phase of the rho-omega interference leaving rho(1450), rho(1700) resonances  as free parameters of the fit. The fit uses also data from CMD-2 and DM2 experiments. Systematic  errors not estimated.


pdgid: M105M5
text:
From a Dalitz plot analysis in an isobar model with rho(1450) and rho(1700) masses and  widths floating.


pdgid: M105M5
text:
Using the GOUNARIS 1968 parametrization of the pion form factor leaving  the masses and widths of the rho(1450), rho(1700), and rho(2150) resonances as free parameters of the fit.


pdgid: M105M5
text:
From the combined fit of the tau- data from ANDERSON 2000A and SCHAEL 2005C and e+ e- data from the compilation of BARKOV 1985, AKHMETSHIN 2004, and ALOISIO 2005. rho(1700) mass and width fixed at 1713 MeV and 235 MeV, respectively.  Supersedes BARATE 1997M.


pdgid: M105G4
text:
Includes non-resonant contribution. The selected fit model includes three rho excited states.  Model uncertainty is 20%.


pdgid: M105G6
text:
From 2 gamma decay mode of eta using 1465 MeV and 310 MeV for the rho(1450) mass and width. Recalculated by us.


pdgid: M105G6
text:
Using the data of AKHMETSHIN 2001B on e+ e- --> eta gamma, AKHMETSHIN 2000D and ANTONELLI 1988 on e+ e- --> eta pi+ pi-. Recalculated by us using width of 226 MeV.


pdgid: M105R00
text:
From a fit to the e+ e- --> eta pi+ pi- cross section with vector meson dominance model  including rho(770), rho(1450), and rho(1700) decaying exclusively via eta rho(770).  Masses and widths of vector states are fixed to PDG 2014. Coupling constants are assumed to  be real.


pdgid: M105R04
text:
Using Breit-Wigner parametrization of the rho(1450) with mass and width of 1465 MeV and 400 MeV, respectively.


pdgid: M105R2
text:
From a phenomenological model based on vector meson dominance with  rho(1450) and phi(1680) masses and widths from the PDG 2012.


pdgid: M105R4
text:
From a fit to the e+ e- --> eta pi+ pi- cross section with vector meson dominance model  including rho(770), rho(1450), and rho(1700) decaying exclusively via eta rho(770).  Masses and widths of vector states are fixed to PDG 2014. Coupling constants are assumed to be real.


pdgid: M175M5
text:
From a fit to gamma phi invariant mass. Angular analysis consistent with J**PC = 0-+.  Other J**PC not excluded.


pdgid: M175R00
text:
Seen as a peak in gamma phi invariant mass. Angular analysis consistent with  J**PC = 0-+. Other J**PC not excluded. Also see eta(1405).


pdgid: M152PP
text:
T-matrix pole from coupled channel K-matrix fit to data on J/psi --> gamma pi0 pi0  (ABLIKIM 2015AE) and J/psi --> gamma K0S K0S (ABLIKIM 2018AA).


pdgid: M152PP
text:
T-matrix pole of 3 channel unitary model fit to data from AAIJ 2014BR and AAIJ 2017V  extracted using Pade approximants.


pdgid: M152PP
text:
Pole position from combined analysis of pi- p --> pi0 pi0 n, pi- p --> K Kbar n, pi+ pi- --> pi+ pi-,  pbar p --> pi0 pi0 pi0, pi0 eta eta, pi0 pi0 eta, pi+ pi- pi0, K+ K- pi0,  K0S K0S pi0, K+ K0S pi- at rest, pbar n --> pi- pi- pi+, K0S K- pi0, K0S K0S pi- at rest.


pdgid: M152M
text:
The pi+ pi- mass spectrum is described by a coherent sum of two Breit-Wigner resonances,   f_{{0}}(1500) and a new X(1540) with mass 1540.2+-7.0+36.3-6.1 MeV and width 157+-19+11-77   MeV.


pdgid: M152M
text:
From partial wave analysis including all possible combinations of 0**++, 2**++, and  4**++ resonances.


pdgid: M152W
text:
From partial wave analysis including all possible combinations of 0**++, 2**++, and 4**++ resonances.


pdgid: M152R12
text:
From a Breit-Wigner fit involving 9 resonances and a resonating exotic eta_1(1855) --> eta eta^' P-wave.


pdgid: M013M1
text:
From an amplitude analysis where the f_{{2}}^'(1525) width and elasticity are in complete disagreement with the values obtained from K Kbar channel, making the solution dubious.


pdgid: M013M3
text:
From a fit to a  Breit-Wigner line shape plus a second-order polynomial function. Systematic errors  not evaluated.


pdgid: M013M9
text:
T-matrix pole, 4 poles, 4 channels, including scattering data from HYAMS 1975 (pi pi),  LONGACRE 1986 (K Kbar), BINON 1983 (eta eta).


pdgid: M013M10
text:
In the SU(3) based model with a specific interference pattern of the f_{{2}}(1270), a_{{2}}^0(1320), and f_{{2}}^'(1525) mesons incoherently added to the f_{{0}}(1710) and non-resonant background.


pdgid: M013W7
text:
From analysis of L3 data at 91 and 183 -- 209 GeV, using Gamma(f_2^'(1525) --> K Kbar) = 68 MeV and SU(3) relations.


pdgid: M013R8
text:
Combining results of GAM4 with those of WA76 on K Kbar central production and results of CBAL, MRK3 and DM2 on J/psi --> gamma eta eta.


pdgid: M013R3
text:
Using the compilation of the cross sections for f_{{2}}^'(1525) production in K- p collisions from ASTON 1988D.


pdgid: M013R1
text:
MARTIN 1979 uses the PAWLICKI 1977 data with different input value of the f_2^'(1525) --> K Kbar branching ratio.


pdgid: M123M
text:
From a simultaneous analysis of the annihilations pbar p --> 3pi0, pi0 eta eta including AKER 1991 data.


pdgid: M123W3
text:
From analysis of L3 data at 91 and 183 -- 209 GeV, using f_{{2}}(1565) mass of 1570 MeV,  width of 160 MeV, Gamma(pi pi) = 25 MeV, and SU(3) relations.


pdgid: M188M
text:
From a vector dominance fit to the Born cross section between 1.05 and 2.0 GeV with rho(770),  rho(1570), rho(1700), rho(2150). The fit also uses SND data from the VEPP-2M collider  below 1.02 GeV and from LEES 2017H and ABLIKIM 2021A above 1.5 GeV.


pdgid: M188M
text:
From a fit using a  two resonance model in which the mass and width of the other resonance are  fixed at the  rho(1700) values from PDG 2020.


pdgid: M164M
text:
Superseded by DZIERBA 2006 excluding this state in a more refined PWA analysis, with 2.6 M events of pi- p --> pi- pi- pi+ p and 3 M events of pi- p --> pi- pi0 pi0 p of E852 data.


pdgid: M164R1
text:
From the PWA analysis of 2.6 M pi- p --> pi- pi- pi+ p and 3 M events of pi- p --> pi- pi0 pi0 p of E852 data. Supersedes ADAMS 1998B.


pdgid: M164R3
text:
From the PWA analysis of 2.6 M pi- p --> pi- pi- pi+ p and 3 M events of pi- p --> pi- pi0 pi0 p of E852 data. Supersedes CHUNG 2002.


pdgid: M126M
text:
From a VDM fit to  AKHMETSHIN 2017A omega eta data with  two additional resonances of low  statistical evidences.


pdgid: M126M
text:
From a fit with contributions from omega(1420), omega(1650), and phi(1680). The mass of  omega(1420) is fixed to the PDG 2018 value of 1420 MeV. Fixing also the width of  omega(1420) to the PDG 2018 value of 220 MeV results in 1694+-9 MeV measurement.


pdgid: M126M
text:
From a fit with contributions from omega(782), phi(1020), omega(1420), and   omega(1650). See ACHASOV 2020A for a further analysis of the pi+ pi- pi0 data.


pdgid: M126M
text:
Using the data of AKHMETSHIN 2000D and ANTONELLI 1992. The rho pi dominance for the energy dependence of the omega(1420) and omega(1650) width assumed.


pdgid: M126W
text:
From a fit with contributions from omega(1420), omega(1650), and phi(1680). The mass of  omega(1420) is fixed to the PDG 2018 value of 1420 MeV. Fixing also the width of  omega(1420) to the PDG 2018 value of 220 MeV results in 94+-13 MeV measurement.


pdgid: M126G5
text:
From a fit with contributions from omega(1420), omega(1650), and phi(1680). The mass of  omega(1420) is fixed to the PDG 2018 value of 1420 MeV. Fixing also the width of  omega(1420) to the PDG 2018 value of 220 MeV results in 5.4+-0.6E-7 measurement.


pdgid: M126G5
text:
From a fit of the interfering omega(1420) and omega(1650) with a relative phase of pi  and other parameters floating. From an alternative fit Gamma(omega(1650) --> omega eta)/Gamma(total)xGamma(omega(1650) --> e+ e-) = 51+-3 eV.


pdgid: M126R00
text:
From a fit of a VMD model with two effective resonances  with masses of 1450 MeV and 1700 MeV to  describe the excited vector states omega(1420), rho(1450), omega(1650), and  rho(1700). The width of the highest mass effective resonance is fixed at 315 MeV.


pdgid: M034M
text:
Clear phase rotation seen in 2**-S, 2**-P, 2**-D waves. We quote central value and spread of single-resonance fits to three channels.


pdgid: M034M
text:
From a two-resonance fit to four 2**-0**+ waves.  This should not be averaged with all the single resonance fits.


pdgid: M034W2
text:
Primakoff reaction. Assumes incoherent f_2(1270) pi contribution to 3 pi final state and uses B(pi_2(1670) --> f_2() pi) = 56%.


pdgid: M067M1
text:
From a VDM fit to  ZHU 2023 eta phi gamma data with  two resonances, phi(1680),  phi(2170), and a third resonance with mass 1850.7+-5.3 MeV and width 25+-35 MeV of  1.7 sigma statistical evidence.


pdgid: M067M1
text:
From a fit using a vector meson dominance model with contributions from phi(1680),  phi(2170) and non resonant contribution.


pdgid: M067M1
text:
From the analysis of the combined measurements of CS(e+ e- --> eta phi) from BaBar, Belle,  BESIII, CMD3.


pdgid: M067M1
text:
From a partial wave amplitude analysis at sqrt(s) = 2.125 GeV which includes all the possible   intermediate states that match J**PC conservation in the subsequent two-body decay. The   intermediate states are parameterized with the relativistic Breit-Wigner functions. Statistical  error only.


pdgid: M067M1
text:
From a fit using a vector meson dominance model with contribution from rho(770),  omega(782), phi(1020),  omega(1420),  rho(1450).


pdgid: M067M1
text:
Using a vector meson dominance model with contribution from phi(1020), phi(1680), and  higher mass excitations of rho(770) and omega(782).


pdgid: M067M1
text:
From the simultaneous fit to the K Kbar^*(892)  + c.c. and phi eta data from AUBERT 2008S using the results of AUBERT 2007AK.


pdgid: M067M1
text:
From the combined fit of AKHMETSHIN 2003 and MANE 1981 also including rho, omega, and phi. Neither isospin nor flavor structure known.


pdgid: M067W1
text:
From a VDM fit to ZHU 2023 eta phi gamma data with two resonances, phi(1680),  phi(2170), and a third resonance with mass 1850.7+-5.3 MeV and width 25+-35 MeV of  1.7 sigma statistical evidence.


pdgid: M067R00
text:
From a solution of the fit using a vector meson dominance model with contributions from  phi(1680), phi(2170) and non resonant contribution. Other solutions with equal fit     quality  give (219+-15+-18) eV, (163+-11+-13) eV and (203+-12+-18) eV.


pdgid: M067R00
text:
From the analysis of the combined measurements of CS(e+ e- --> eta phi) from BaBar, Belle,  BESIII, CMD3. Four solutions are found, with equal fit quality: (79+-4+-16) eV, (127+-5+-12) eV,  (65+5-4+-13) eV, (215+8-5+-11) eV.


pdgid: M067R03
text:
The 90% CL upper limit on the Born cross sections sigma(e+ e- --> phi(1680) --> f_2^'(1525) gamma --> eta eta gamma) and  sigma(e+ e- --> rho(1700) --> f_0(1500) gamma --> eta eta gamma) is 10.6 pb.


pdgid: M015M1
text:
From a phase shift solution containing a f_{{2}}^'(1525) width two times larger than the K Kbar result.


pdgid: M015M6
text:
Seen in 2.5-3 GeV/c pbar p.  2pi+ 2pi-, with 0, 1, 2 pi+ pi- pairs in rho band not seen by OREN 1974 (2.3 GeV/c pbar p) with more statistics.  (Jan. 1976)


pdgid: M015W6
text:
Seen in 2.5-3 GeV/c pbar p.  2pi+ 2pi-, with 0, 1, 2 pi+ pi- pairs in rho0 band not seen by OREN 1974 (2.3 GeV/c pbar p) with more statistics.  (Jan. 1979)


pdgid: M015R2
text:
Comparison with unpublished data on pi- p 16 GeV with four times bigger statistics shows serious problems with the BALLAM 1971B data. Morrison doesn't want to be quoted yet.  Vlada.


pdgid: M065M1
text:
An additional 40 MeV uncertainty in both the mass and width is present due to the choice of the background shape.


pdgid: M065M8
text:
From a vector dominance fit to the Born cross section between 1.05 and 2.0 GeV with rho(770),  rho(1570), rho(1700), rho(2150). The fit also uses SND data from the VEPP-2M collider  below 1.02 GeV and from LEES 2017H and ABLIKIM 2021A above 1.5GeV.


pdgid: M065M8
text:
Taking into account both rho(1450) and rho(1700) contributions. Using the data of ACHASOV 2000I on e+ e- --> omega pi0 and of EDWARDS 2000A on tau- --> omega pi- nu_tau. rho(1450) mass and width fixed at 1400 MeV and 500 MeV respectively.


pdgid: M065M8
text:
Taking into account the rho(1700) contribution only. Using the data of ACHASOV 2000I on e+ e- --> omega pi0 and of EDWARDS 2000A on tau- --> omega pi- nu_tau.


pdgid: M065M2
text:
Using the GOUNARIS 1968 parameterization with a fixed width. Value is average using different K pi  S-wave parametrizations in fit.


pdgid: M065W1
text:
From a Dalitz plot analysis in an isobar model with rho(1450) and rho(1700) masses and widths floating.


pdgid: M065G11
text:
Includes non-resonant contribution. The selected fit model includes three rho excited states.  Model uncertainty is 80%.


pdgid: M065R01
text:
From a phenomenological model based on vector meson dominance with interfering rho(700),  rho(1450), and rho(1700). The rho(1700) mass and width are fixed at 1720 MeV and 250  MeV, respectively. Systematic uncertainty not estimated. Supersedes ACHASOV 2013.


pdgid: M065R00
text:
From the combined fit of AULCHENKO 2015 and ACHASOV 2018  in the model with the  interfering rho(1450), rho(1700) and rho(2150) with the parameters of the rho(1450)  and rho(1700) floating and the mass and width of the rho(2150) fixed at 2155 MeV and 320  MeV, respectively. The phases of the resonances are pi, 0 and pi, respectively.


pdgid: M065R5
text:
Residue from T-matrix pole, 2 poles, 3 channels, Chew-Mandelstam functions and simplified analytic  continuation for the 4pi channel. Includes scattering data from HYAMS 1975 and  model-independent calculation of GARCIA-MARTIN 2011A.


pdgid: M162PP
text:
Based on combined fit of Crystal Barrel and pi pi scattering data (ALBRECHT 2020), and  COMPASS data (ADOLPH 2015), using a coupled-channel model of eta pi, eta^' pi and  K Kbar systems.


pdgid: M162W3
text:
From analysis of L3 data at 91 and 183 -- 209 GeV, using a_{{2}}(1700) mass of 1730 MeV and width of 340 MeV, and SU(3) relations.


pdgid: M263M
text:
Observed to decay into K0S K+ in a Breit-Wigner amplitude analysis involving D_{{s}}()+ decays  into Kbar^*(892)0 K+, Kbar^*(892)+ K0S, Kbar^*(1410)0 K+, a_0(980)+ pi0, and  a_0(1817)+ pi0.


pdgid: M263R00
text:
Using D_s()+ --> K+ K- pi+ from ABLIKIM 2021AE. The apparent violation of isospin  symmetry may be due to a destructive interference with the f_{{0}}(1710) in the K+ K- channel,  and a constructive interference in the K0S K0S channel.


pdgid: M068M
text:
Uses MRK3 data. From a partial-wave analysis of data using a K-matrix formalism with 5 poles, but assuming spin 2. Fit with constrained inelasticity.


pdgid: M068R2
text:
From a partial-wave analysis of data using a K-matrix formalism with 5 poles, but assuming spin 2. Fit with constrained inelasticity.


pdgid: M255R00
text:
Reported with a 2 sigma significance in the fit and an upper limit of  Gamma(e+ e-)  B(X(1750) --> eta phi) in the range 136 -- 322 eV.


pdgid: M264M
text:
From partial wave analysis of omega phi invariant mass including 0**++, 2**++, and  0**-+ resonances.


pdgid: M264R00
text:
Using one-pion exchange. Assigning this resonance to be f_{{0}}(1710) instead gives B(f_0() --> pi pi)  x B(f_0() --> omega phi) = 3.9+-1.0E-3.


pdgid: M038M
text:
From an amplitude analysis of the reaction pi+ pi- --> 2pi0. The resonance in the 2pi0 final state is not confirmed by PROKOSHKIN 1997.


pdgid: M085M
text:
From a fit of the measured 3(pi+ pi-) lineshape that accounts for the abrupt distortion  observed at the p pbar threshold through interference with a second previously unseen narrow  resonance near 1880 MeV. The fit uses Breit-Wigner functions for the signal shapes and includes  known background contributions. A second solution of the fit gives 37k events.


pdgid: M085M
text:
From a fit of the measured pi+ pi- eta^' lineshape that accounts for the abrupt distortion  observed at the p pbar threshold through interference with a second previously unseen narrow  resonance near 1870 MeV. The fit uses Breit-Wigner functions for the signal shapes and includes  known backgrounds and contributors.


pdgid: M085M
text:
From a fit of the measured 3(pi+ pi-) lineshape to a Flatte formula that accounts for the  abrupt distortion observed at the p pbar threshold. The fit also includes known background  contributions.


pdgid: M085M
text:
Pole mass from a fit of the measured pi+ pi- eta^' lineshape to a Flatte formula that accounts  for the abrupt distortion observed at the p pbar threshold; the fit also includes known  backgrounds and contributors, as well as an ad hoc Breit-Wigner function (M ~~ 1919  MeV; Gamma ~~ 51 MeV) that is required for a good fit.


pdgid: M085M
text:
From the fit including final state interaction effects in isospin 0 S-wave according to SIBIRTSEV 2005A.  Supersedes ABLIKIM 2010G.


pdgid: M085M
text:
From a fit of the pi+ pi- eta^' mass distribution to a combination of gamma f_1(1510), gamma X(1835), and two states gamma X(2120) and  gamma eta(2370), for M(pi+ pi- eta^') < 2.8  GeV,and accounting for backgrounds from non-eta^' events and J/psi --> pi0 pi+ pi- eta^'.


pdgid: M085M
text:
The selected process is J/psi --> omega a_0(980) pi with B(J/psi --> omega X --> omega a_0(980)+- ( --> eta pi+- ) pi-+) =  1.50+-0.26+0.72-0.36E-4. Not seen in J/psi(1S) --> omega K+ K- eta by ABLIKIM 2024BQ with  90% CL upper limit of 9.55E-7. This state may be also due to eta_{{2}}(1870) or to a  combination of X(1835) and eta_{{2}}(1870).


pdgid: M085M
text:
From a fit of the p pbar mass distribution to a combination of gamma X(1835), gamma R with M(R) = 2100 MeV and Gamma(R) = 160 MeV, and gamma p pbar phase space, for M(p pbar) < 2.85 GeV.


pdgid: M085M
text:
Evidence for a threshold enhancement in the p pbar mass spectrum was also reported by ABE 2002K, AUBERT,B 2005L, and WANG 2005A in B+ --> p pbar K+,  WANG 2005A in B0 --> p pbar K0S, ABE 2002W in Bbar0 --> p pbar D0, DEL-AMO-SANCHEZ 2012 in B --> D(D^*)p pbar(pi), and WEI 2008 in B+ --> p pbar pi+ decays. Not seen by ATHAR 2006 in Upsilon(1S) --> p pbar gamma.


pdgid: M085M
text:
From the fit including final state interaction effects in isospin 0 S-wave according to SIBIRTSEV 2005A. Systematic errors not estimated.


pdgid: M085W
text:
Pole width from a fit of the measured pi+ pi- eta^' lineshape to a Flatte formula that accounts  for the abrupt distortion observed at the p pbar threshold; the fit also includes known  backgrounds and contributors, as well as an ad hoc Breit-Wigner function (M ~~ 1919  MeV; Gamma ~~ 51 MeV) that is required for a good fit.


pdgid: M085G01
text:
From a two-resonance fit and constructive interference of the eta(1760) and X(1835), a significance of 2.8 sigma.


pdgid: M085G01
text:
From a two-resonance fit and destructive interference of the eta(1760) and X(1835), a significance of 2.8 sigma.


pdgid: M085R03
text:
ABLIKIM 2016J quotes B(  J/psi --> gamma X(1835)  ) x B(  X(1835) --> pi+ pi- eta^'  ) =  3.93+-0.38+0.31-0.84E-4 from a fit of the measured pi+ pi- eta^' lineshape that accounts  for the abrupt distortion observed at the p pbar threshold with a Flatte formula in addition to  known backgrounds and contributors, as well as an ad hoc Breit-Wigner (M ~~ 1919  MeV; Gamma ~~ 51 MeV) that is required for a good fit. Another explanation for the  distortion provided by ABLIKIM 2016J is that a second resonance near 1870 MeV interferes with  the X(1835); fits to this possibility yield product branching fraction values compatible with  that shown within the respective systematic uncertainties.


pdgid: M085R04
text:
Seen as a peak in gamma phi invariant mass. Angular analysis consistent with  J**PC = 0-+. Other J**PC not excluded.


pdgid: M085R06
text:
ABLIKIM 2024B quotes B(  J/psi --> gamma X(1835)  ) x B(  ) =  1.19+-0.30+-0.15E-5 for constructive interference and  2.07+-0.50+-0.36E-5 for  destructive interference from a fit of the measured 3(pi+ pi-) lineshape that accounts for the  abrupt distortion observed at the p pbar threshold through interference with a second narrow  resonance near 1880 MeV.  The solution for destructive interference gives 37k events.


pdgid: M267M
text:
From a Breit-Wigner fit involving 9 resonances and the resonating exotic eta_1(1855) --> eta eta^'  P-wave. For analysis details see ABLIKIM 2022AS.


pdgid: M227M
text:
From a model-independent partial wave analysis fit to a relativistic Breit-Wigner function with a  floating width.


pdgid: M227W
text:
From a model-independent partial wave analysis fit to a relativistic Breit-Wigner function with a  floating mass.


pdgid: M135M
text:
From solution B of amplitude analysis of data on pbar p --> pi pi. See however KLOET 1996 who fit pi+ pi- only and find waves only up to J = 3 to be important but not significantly resonant.


pdgid: M167M
text:
From the combined analysis of ANISOVICH 2000J, ANISOVICH 2001D, ANISOVICH 2001E, and ANISOVICH 2002.


pdgid: M106M
text:
Includes data of ETKIN 1985. The percentage of the resonance going into phi phi **2**++ S(2), D(2), and D(0) is 98+1-3, 0+1-0, and 2+2-1, respectively.


pdgid: M016M
text:
From solution A of amplitude analysis of data on pbar p --> pi pi. See however KLOET 1996 who fit pi+ pi- only and find waves only up to J = 3 to be important but not significantly resonant.


pdgid: M042M1
text:
OAKDEN 1994 makes an amplitude analysis of LEAR data on pbar p --> pi pi using a method based on Barrelet zeros. This is  solution A. The amplitude analysis of HASAN 1994 includes earlier data as well, and assume that the data can be parametrized in terms of towers of nearly degenerate resonances on the leading Regge trajectory. See also KLOET 1996 and MARTIN 1997 who make related analyses.


pdgid: M042W1
text:
See however KLOET 1996 who fit pi+ pi- only and find waves only up to J = 3 to be important but not significantly resonant.


pdgid: M032M3
text:
From a fit to the cross section between 2.00 and 3.08 GeV with a coherent sum of a Breit-Wigner  resonance and a non-resonant contribution. Could be another state.


pdgid: M032M3
text:
From a fit to the cross section between 2.00 and 3.08 GeV with a coherent sum of Breit-Wigner  amplitudes, including contributions from rho(770), rho(1450) and rho(1700). Could be  another state.


pdgid: M032M3
text:
From the fit to the BABAR data of LEES 2013Q assuming a coherent sum of a single Breit-Wigner  resonance and a nonresonant contribution. The resonance significance is 3.5 sigma.


pdgid: M032M3
text:
From the fit to the BABAR data of LEES 2013Q and BESIII data of ABLIKIM 2019L assuming  a coherent sum of a single Breit-Wigner resonance and a nonresonant contribution.


pdgid: M032M3
text:
Could also be another state.  Seen in J/psi decay with branching ratio J/psi --> X pi0 --> K+ K- pi0  = 6.7+-1.1+2.2-1.8E-6.


pdgid: M032M2
text:
Seen as bump in I = 1 state.  See also COOPER 1968. PEASLEE 1975 confirm pbar p results of ABRAMS 1970, no narrow structure.


pdgid: M032W3
text:
From a vector dominance fit to the Born cross section between 1.05 and 2.0 GeV with  rho(770), rho(1570), rho(1700), rho(2150). The fit also uses SND data from the  VEPP-2M collider below 1.02 GeV and from LEES 2017H and ABLIKIM 2021A above 1.5 GeV.


pdgid: M032W3
text:
From a fit to the cross section between 2.00 and 3.08 GeV with a coherent sum of Breit-Wigner  amplitudes, including contributions from  rho(770), rho(1450) and rho(1700). Could be  another state.


pdgid: M032W3
text:
Could also be another state. Seen in J/psi decay with branching ratio J/psi --> X pi0 --> K+ K- pi0 =  6.7+-1.1+2.2-1.8E-6.


pdgid: M032R02
text:
From a Breit-Wigner fit to the Born cross section interfering constructively with the continuum.  For destructive interference the value is 0.64+-0.49+-0.42 eV.


pdgid: M032R04
text:
From a solution of the fit to the cross section between 2.00 and 3.08 GeV using a coherent sum of a  single Breit-Wigner resonance and a non-resonant contribution. B(a_2(1320) --> eta pi)  x B(eta --> gamma gamma) fixed to 0.057. Another solution with equal fit quality  gives 137.1+-73.3+-2.1 eV.


pdgid: M103M
text:
From a fit to the e+ e- cross section between 2.00 and 3.08 GeV with a sum of Breit-Wigner   amplitude and a non-resonant contribution.


pdgid: M103M
text:
By a simultaneous fit of the K_2^*(1430)+ K- and K^*(892)+ K- intermediate channels in a  partial-wave analysis, assuming the same structure, modelled with a coherent sum of a nonresonant  component and a resonant component by a Breit-Wigner function.


pdgid: M103M
text:
From a fit to the cross section below 3.5 GeV measured by BaBar and BESIII with a coherent sum of  two modified  Breit-Wigner amplitudes (phi(1680) and phi(2170)) and a nonresonant term.


pdgid: M103M
text:
From a fit using a coherent sum of a phase-space modified Breit-Wigner function and a phase-space  term.


pdgid: M103M
text:
By a simultaneous fit of the intermediate channels in a partial-wave analysis, assuming the same  structure, modelled with a coherent sum of a nonresonant component and a resonant component by a  Breit-Wigner function.


pdgid: M103M
text:
From the analysis of the combined measurements of CS(e+ e- --> eta phi) from BaBar, Belle,  BESIII, CMD3. The statistical significance for phi(2170) is 7.2 sigma.


pdgid: M103M
text:
From a fit to the cross section between 2.00 and 3.08 GeV with a sum of Breit-Wigner amplitude and  a nonresonant contribution. The observed  structure can be also due to rho(2150).


pdgid: M103W
text:
From a fit to the cross section below 3.5 GeV measured by BaBar and BESIII with a coherent sum of  two modified Breit-Wigner amplitudes (phi(1680) and phi(2170)) and a nonresonant term.


pdgid: M103G2
text:
From a solution of the fit using a vector meson dominance model with contributions from  phi(1680), phi(2170) and non resonant contribution with mass and width of phi(2170)  fixed at 2163.5 MeV and 31.1 MeV respectively. Four solutions are found with equal fit quality  giving 0.17 eV (solution I and II) and 18.6 eV (III and IV) at 90% CL.


pdgid: M103G2
text:
From the analysis of the combined measurements of CS(e+ e- --> eta phi) from BaBar, Belle,  BESIII, CMD3. The statistical significance for phi(2170) is 7.2 sigma. Four solutions  are found, with equal fit quality:  (0.56+0.03-0.02+-0.07) eV, (0.36+0.05-0.03+-0.07)  eV, (38+-1+-5) eV, (41+-2+-6) eV.


pdgid: M103G2
text:
From a solution of the fit to the cross section below 3.5 GeV measured by BaBar and BESIII with a  coherent sum of  two modified  Breit-Wigner amplitudes (phi(1680) and phi(2170)) and a  nonresonant term.  The  other solution gives 10.11+3.87-3.13 eV.


pdgid: M103G1
text:
From a fit with constructive interference with the phi(1680).  In a fit with destructive  interference, the value is larger by a factor of 12.


pdgid: M103R11
text:
From a solution of a simultaneous fit of the K_2^*(1430)+ K- and K^*(892)+ K- intermediate  channels in a partial-wave analysis, assuming the same structure, modelled with a coherent sum of a  nonresonant component and a resonant component by a Breit-Wigner function. The other solution gives  7.1+-0.9 eV. Significance 3.7 sigma.


pdgid: M103R06
text:
By a simultaneous fit of the intermediate channels in a partial-wave analysis, assuming the same  structure, modelled with a coherent sum of a nonresonant component and a resonant component by a  Breit-Wigner function. A second solution of the fit with equal fit quality gives an upper limit  value of 297.6 eV.


pdgid: M103R07
text:
By a simultaneous fit of the intermediate channels in a partial-wave analysis, assuming the same  structure, modelled with a coherent sum of a nonresonant component and a resonant component by a  Breit-Wigner function. A second solution of the fit with equal fit quality gives a value of 98.8+-7.8 eV.


pdgid: M103R12
text:
From a solution of a simultaneous fit of the K_2^*(1430)+ K- and K^*(892)+ K- intermediate   channels in a  partial-wave analysis, assuming the same structure, modelled with a coherent sum  of  a nonresonant  component and a resonant component by a Breit-Wigner function. The other solution  gives 161.1+-20.6 eV.


pdgid: M270M
text:
From a fit to the e+ e- cross section between 2.00 and 3.08 GeV with a sum of Breit-Wigner  amplitude and a non-resonant contribution.


pdgid: M270M
text:
From a fit to omega pi+ pi- and omega pi0 pi0 with a Breit-Wigner resonance interfering  with the continuum. Supersedes ABLIKIM 2022I.


pdgid: M270M
text:
From a fit to the cross section between 2.00 and 3.08 GeV with a coherent sum of Breit-Wigner  amplitudes, including contributions from omega(1420) and omega(1650)/phi(1680).


pdgid: M270M
text:
From the fit to the cross section by the coherent sum of resonant component parametrized by a  modified Breit-Wigner amplitude and a phase-space contribution for the continuum.


pdgid: M270R01
text:
From a fit to omega pi+ pi- with a Breit-Wigner resonance interfering with the continuum.  Solution with constructive interference: 52.9+-17.0+-13.1 eV.


pdgid: M270R00
text:
From a fit to omega pi+ pi- and omega pi0 pi0 with a Breit-Wigner resonance interfering   with the continuum. Solution with constructive interference: 61.1+-32.1+-15.4 eV. Supersedes   ABLIKIM 2022I.


pdgid: M270R02
text:
For constructive interference with omega(1420) and omega(1650)/phi(1680). For  destructive interference: 1.25+-0.48+-0.18 eV.


pdgid: M115M
text:
From a partial wave analysis of J/psi --> gamma phi phi that also finds significant signals for  for eta(2100), **0**-+ phase space, f_{{0}}(2100), f_{{2}}(2010), f_{{2}}(2300),  f_{{2}}(2340), and a previously unseen **0**-+ state X(2500) (M = 2470+15-19+101-23 MeV,  Gamma = 230+64-35+56-33 MeV).


pdgid: M107M
text:
Includes data of ETKIN 1985. The percentage of the resonance going into phi phi **2**++ S(2), D(2), and D(0) is 6+15-5, 25+18-14, and 69+16-27, respectively.


pdgid: M107M
text:
Threshold enhancement in Lambda Lambdabar, preferred J**PC are **2**++,    **2**-+, or **1**++. Could be another state.


pdgid: M107W
text:
Threshold enhancement in Lambda Lambdabar, preferred J**PC are **2**++,  **2**-+, or **1**++. Could be another state.


pdgid: M107R00
text:
Threshold enhancement in Lambda Lambdabar, preferred J**PC are **2**++,   **2**-+, or **1**++. Could be another state.


pdgid: M041M2
text:
From the combined analysis of ANISOVICH 1999C and ANISOVICH 1999F on pbar p --> eta pi0 pi0, pi0 pi0, eta eta, eta eta^', pi+ pi-.


pdgid: M108M
text:
Includes data of ETKIN 1985. The percentage of the resonance going into phi phi **2**++ S(2), D(2), and D(0) is 37+-19, 4+12-4, and 59+21-19, respectively.


pdgid: M033M2
text:
No evidence for this bump seen in the pbar p data of CHAPMAN 1971B. Narrow state not confirmed by OH 1973 with more data.


pdgid: M247M
text:
Decaying to f_0(980) eta^', fitted together with X(1835), a 600 MeV broad structure around  2.8 GeV, and the tail of the eta_{{c}}(1S). Supersedes ABLIKIM 2020Q.


pdgid: M247M
text:
The state observed by ABLIKIM 2011C at 2120 MeV is not observed with 90% CL upper limit   of 1.49E-5 for J/psi --> gamma X(2120) --> gamma K+ K- eta^' and 6.38E-6 for K0S K0S eta^'.


pdgid: M247W
text:
The state observed by ABLIKIM 2011C at 2120 MeV is not observed with 90% CL upper limit  of 1.49E-5 for J/psi --> gamma X(2120) --> gamma K+ K- eta^' and 6.38E-6 for K0S K0S eta^'.


pdgid: M089M
text:
From the combined analysis of ANISOVICH 1999C, ANISOVICH 1999F, ANISOVICH 1999J,  ANISOVICH 1999K, and ANISOVICH 2000B.


pdgid: S010M
text:
The CHENG 1975 values for separate transitions were calculated from their Table7  transition energies.  The first error includes a 20% systematic error in the noncircular contaminant shift. The second error is due to a +-5 eV uncertainty in the theoretical transition energies.


pdgid: S010T
text:
Result obtained by averaging the decay length and decay time analyses taking correlations into account.


pdgid: S010T
text:
KOPTEV 1995 report this weighted average of their U-target and Cu-target results, where they have weighted by 1/sigma rather than 1/sigma**2.


pdgid: S010R28
text:
LAZZERONI 2013 uses full data sample collected from 2007 to 2008. This ratio is defined to be   fully inclusive, including internal-bremsstrahlung.


pdgid: S010R28
text:
The ratio is defined to include internal-bremsstrahlung, ignoring direct-emission contributions. AMBROSINO 2009E determined the ratio from the measurement of Gamma(K --> e nu ( gamma ), E(gamma)< 10 MeV) / Gamma(K --> mu nu ( gamma )). 89.8% of K --> e nu ( gamma ) events had E(gamma)<10 MeV.


pdgid: S010R6
text:
Depends on K+ lifetime tau.  AMBROSINO 2008A uses PDG 2006 value of tau =   1.2385+-0.0024E-8 sec. The correlation between K_{{e3}}()+ and K_{{mu3}}()+ branching  fraction  measurements is 62.7%.


pdgid: S010R25
text:
AUERBACH 1967 changed from 0.0797+-0.0054.  See comment with ratio G(K+ --> pi0 mu+ nu_mu)/G(K+ --> mu+ nu_mu).


pdgid: S010R23
text:
Value calculated from WEISSENBERG 1976 (pi0 e nu), (mu nu), and (pi pi0) values to eliminate dependence on our 1974 (pi 2pi0) and (pi pi+ pi-) fractions.


pdgid: S010R43
text:
LUCAS 1973B gives N(K_{{e3}}) = 786+-3.1%, N(2pi) = 3564+-3.1%. We use these values to obtain quoted result.


pdgid: S010R20
text:
HAIDT 1971 is a reanalysis of EICHTEN 1968. Not included in average because of large discrepancy in Gamma(pi0 mu+ nu)/Gamma(pi0 e+ nu) with more precise results.


pdgid: S010R5
text:
Depends on K+ lifetime tau.  AMBROSINO 2008A uses PDG 2006 value of tau =  1.2385+-0.0024E-8 sec. The correlation between K_{{e3}}()+ and K_{{mu3}}()+ branching fraction  measurements is 62.7%.


pdgid: S010R26
text:
GARLAND 1968 changed from 0.055+-0.004 in agreement with mu-spectrum calculation of GAILLARD 1970 appendix B.  L.G.Pondrom, (private communication 73).


pdgid: S010R29
text:
Not used in the fit. This result enters the fit via correlation of K_e3()+ and K_mu3()+  branching fraction measurements of AMBROSINO 2008A.


pdgid: S010R29
text:
CHIANG 1972 G(K+ --> pi0 mu+ nu_mu)/G(K+ --> pi0 e+ nu_e) is statistically independent of CHIANG 1972 [G(K+ --> pi0 mu+ nu_mu)/G(total) and [G(K+ --> pi0 e+ nu_e)/G(total).


pdgid: S010R06
text:
BATLEY 2024 reported the result extrapolated to the full kinematic space, based on the  measurement B(K+- --> pi0 pi0 mu+- nu) = 0.65+-0.03E-6, in the kinematic region where  the squared dilepton mass is above 0.03 GeV**2/c**4.


pdgid: S010R80
text:
Data collected in 2003 -- 2004. This leads to the scalar form factor (1+ delta_{{EM}})  f_{{s}} = 6.079+-0.012+-0.027+-0.046 where  the last error is due to the normalizing decay mode uncertainty.


pdgid: S010R21
text:
BATLEY 2012 uses data collected in 2003 -- 2004. The result is inclusive of K+- --> pi+ pi- e+- nu gamma decays. Using PDG 2012 value for Gamma(pi+ pi- pi+)/Gamma = 5.59+-0.04E-2. BATLEY 2012 obtains B(pi+ pi- e nu) = 4.257+-0.004+-0.035E-5 where the syst. error is dominated  by the error on the normalization mode.


pdgid: S010R21
text:
PISLAK 2001 reports Gamma(pi+ pi- e+ nu_e)/Gamma(total)= 4.109+-0.008+-0.110E-5 using the PDG 2000 value Gamma(pi+ pi+ pi-)/Gamma(total)= 5.59+-0.05E-2. We divide by the PDG value and unfold its error from the systematic error.


pdgid: S010R2
text:
Fully inclusive of final-state radiation.  The branching ratio is evaluated using K+ lifetime,  = 12.385 ns.


pdgid: S010R24
text:
AUERBACH 1967 changed from 0.3253+-0.0065.  See comment with ratio G(K+ --> pi0 mu+ nu_mu)/G(K+ --> mu+ nu_mu).


pdgid: S010R44
text:
LUCAS 1973B gives N(pi 2pi0) = 574+-5.9%, N(2pi) = 3564+-3.1%. We quote 0.5*N(pi 2pi0)/N(2pi) where 0.5 is because only Dalitz pair pi0's were used.


pdgid: S010R3
text:
Inclusive of final-state radiation. Result obtained from averaging two branching ratios: one from a sample with K- --> mu nu ( gamma ) tagging and another with K- --> pi- pi0 ( gamma ) tagging.


pdgid: S010R3
text:
Value is not independent of CHIANG 1972 G(K+ --> mu+ nu_mu)/G(total), [G(K+ --> pi+ pi0)/G(total), [G(K+ --> pi+ pi0 pi0)/G(total), [G(K+ --> pi0 mu+ nu_mu)/G(total), and [G(K+ --> pi0 e+ nu_e)/G(total).


pdgid: S010R45
text:
P(mu) cut given in DEMIDOV 1990 paper, 235.1MeV/c, is a misprint according to authors (private communication).


pdgid: S010R60
text:
ADLER 2000B obtains the branching ratio by extrapolating the measurement in the kinematic region E(mu)> 137 MeV, E(gamma)> 90 MeV to the full SD**+ phase-space. Also reports |F(V) + F(A)| = 0.165+-0.007+-0.011 and -0.04 < F(V)-F(A)< 0.24 at 90% CL.


pdgid: S010R78
text:
KOBAYASHI 2023 observed 95+-10 K(e2gamma(gamma))**SD**+ events and  derived B(K(e2gamma(gamma))**SD**+ )/B(K(e2(gamma)) ) =  1.25+-0.14+-0.08. The authors obtained the R(gamma) value 1.98+-0.11E-5 by  averaging KOBAYASHI 2023 with ITO 2022 after updating the ITO 2022 result to  include internal bremsstrahlung process in the acceptance calculation.


pdgid: S010R78
text:
AMBROSINO 2009E measured the differential width dR(gamma)/dE(gamma) = (1/Gamma(K --> mu nu)) (dGamma(K --> e nu gamma)/dE(gamma)). Result obtained by integrating the differential width over E(gamma) from 10 to 250 MeV.


pdgid: S010R30
text:
CORTINA-GIL 2023D provides values for three kinematic regions. For averaging, we use value  with E(gamma)> 10 MeV and 0.6 < cos(theta(e gamma)) < 0.9.


pdgid: S010R30
text:
POLYARUSH 2021 provides values for three kinematic regions. For averaging, we use value with  E(gamma)> 10 MeV and 0.6 < cos(theta(e gamma)) < 0.9.


pdgid: S010R30
text:
AKIMENKO 2007 provides values for three kinematic regions. For averaging, we use value with  E(gamma)> 10 MeV and 0.6 < cos(theta(egamma)) < 0.9.


pdgid: S010R30
text:
BARMIN 1991 quotes branching ratio Gamma(K --> e pi0 nu gamma)/Gamma(all). The measured normalization is [Gamma(K --> e pi0 nu) + Gamma(K --> pi+ pi+ pi-)]. For comparison with other experiments we used Gamma(K --> e pi0 nu)/Gamma(all) = 0.0482 to calculate the values quoted here.


pdgid: S010R30
text:
First LJUNG 1973 value is for cos(theta(egamma)) <0.9, second value is for cos(theta(egamma)) between 0.6 and 0.9 for comparison with ROMANO 1971.


pdgid: S010R30
text:
Both ROMANO 1971 values are for cos(theta(egamma))) between 0.6 and 0.9. Second value is for comparison with second LJUNG 1973 value.  We use lowest E(gamma) cut for Summary Table value.  See ROMANO 1971 for E(gamma) dependence.


pdgid: S010R42
text:
Value obtained from B(K+ --> pi0 mu+ nu_mu gamma) = 2.51+-0.74+-0.12E-5 obtained in the kinematic region E(gamma)> 20 MeV, and then theoretical K(mu3gamma) spectrum has been used. Also B(K+ --> pi0 mu+ nu_mu gamma) = 1.58+-0.46+-0.08E-5, for E(gamma)> 30 MeV and  theta(mu gamma) > 20degree, was determined.


