2012 Review of Particle Physics.
Please use this CITATION: J. Beringer et al. (Particle Data Group), Phys. Rev. D86, 010001 (2012).
Cut-off date for this update was January 15, 2012.

GAUGE AND HIGGS BOSONS (gamma, g, W, Z, ...) gamma g (gluon) graviton W boson Z boson Higgs Bosons (H0 and H+-), Searches for Heavy Bosons, Other Than Higgs Bosons, Searches for (rev.) Axions (A0) and Other Very Light Bosons, Searches for (rev.) Collapse Gauge and Higgs Boson table

LEPTONS (e, mu, tau, neutrinos, heavy leptons ...) electron muon tau Heavy Charged Lepton Searches Introduction to the Neutrino Properties Listings (rev.) Neutrino Properties Number of Neutrino Types Double-beta Decay Note on Neutrinoless Double-beta Decay (rev.) Introduction to Three-Neutrino Mixing Parameters Listings Neutrino Mixing (rev.) Heavy Neutral Leptons, Searches for Collapse Leptons table

QUARKS (u, d, s, c, b, t, ...) Note on the Quark Masses (rev.) LIGHT QUARKS --- u, d, s c quark b quark t quark b' quark (4**th Generation) t' quark (4**th Generation) Free Quark Searches Collapse Quarks table

MESONS (pi, K, D, B, psi, Upsilon, ...) LIGHT UNFLAVORED MESONS (S = C = B = 0) Decay Constants of Charged Pseudoscalar Mesons (rev.) pi+− pi0 eta f(0)(500) rho(770) omega(782) eta'(958) f(0)(980) a(0)(980) phi(1020) h(1)(1170) b(1)(1235) a(1)(1260) f(2)(1270) f(1)(1285) eta(1295) pi(1300) a(2)(1320) f(0)(1370) h(1)(1380) pi(1)(1400) eta(1405) f(1)(1420) omega(1420) f(2)(1430) a(0)(1450) rho(1450) eta(1475) f(0)(1500) f(1)(1510) f(2)'(1525) f(2)(1565) rho(1570) h(1)(1595) pi(1)(1600) a(1)(1640) f(2)(1640) eta(2)(1645) omega(1650) omega(3)(1670) pi(2)(1670) phi(1680) rho(3)(1690) rho(1700) a(2)(1700) f(0)(1710) eta(1760) pi(1800) f(2)(1810) X(1835) phi(3)(1850) eta(2)(1870) pi(2)(1880) rho(1900) f(2)(1910) f(2)(1950) rho(3)(1990) f(2)(2010) f(0)(2020) a(4)(2040) f(4)(2050) pi(2)(2100) f(0)(2100) f(2)(2150) rho(2150) phi(2170) f(0)(2200) f(J)(2220) eta(2225) rho(3)(2250) f(2)(2300) f(4)(2300) f(0)(2330) f(2)(2340) rho(5)(2350) a(6)(2450) f(6)(2510) Collapse Light Unflavored Mesons table OTHER LIGHT UNFLAVORED MESONS (S = C = B = 0) Further States STRANGE MESONS (S = + −1, C = B = 0) K+− K0 K(S)0 K(L)0 K(0)*(800) K*(892) K(1)(1270) K(1)(1400) K*(1410) K(0)*(1430) K(2)*(1430) K(1460) K(2)(1580) K(1630) K(1)(1650) K*(1680) K(2)(1770) K(3)*(1780) K(2)(1820) K(1830) K(0)*(1950) K(2)*(1980) K(4)*(2045) K(2)(2250) K(3)(2320) K(5)*(2380) K(4)(2500) K(3100) Collapse Strange Mesons table CHARMED MESONS (C = + −1) D+ − D0 D*(2007)0 D*(2010)+ − D*(0)(2400)0 D*(0)(2400)+ − D(1)(2420)0 D(1)(2420)+ − D(1)(2430)0 D(2)*(2460)0 D(2)*(2460)+ − D(2550)0 D(2600) D*(2640)+ − D(2750) Collapse Charmed Mesons table CHARMED, STRANGE MESONS (C = S = +−1) D(s)+− D(s)*+− D(s0)*(2317)+− D(s1)(2460)+− D(s1)(2536)+− D(s2)(2573)+− D(s1)*(2700)+− D(sJ)*(2860)+− D(sJ)(3040)+− Collapse Charmed, Strange Mesons table BOTTOM MESONS (B = +−1) Note on Production and Decay of b-flavored Hadrons (rev.) B organization B+− B0 B+−/B0 Admixture B+−/B0/B(s)0/b-baryon Admixture V(cb) and V(ub) CKM Matrix Elements B* B(1)(5721)0 B(J)*(5732) B(2)*(5747)0 Collapse Bottom Mesons table BOTTOM, STRANGE MESONS (B = +−1, S = −+1) B(s)0 B(s)* B(s1)(5830)0 B(s2)*(5840)0 B(sJ)*(5850) Collapse Bottom, Strange Mesons table BOTTOM, CHARMED MESONS (B = +−1, C = −+1) B(c)+− Collapse Bottom, Charmed Mesons table c cbar MESONS Note on Branching Ratios of psi(2S) and chi_c(0,1,2) (rev.) eta(c)(1S) J/psi(1S) chi(c0)(1P) chi(c1)(1P) h(c)(1P) chi(c2)(1P) eta(c)(2S) psi(2S) psi(3770) X(3872) X(3915) chi(c2)(2P) X(3940) psi(4040) X(4050)+- X(4140) psi(4160) X(4160) X(4250)+- X(4260) X(4350) X(4360) psi(4415) X(4430)+- X(4660) Collapse c cbar Mesons table b bbar MESONS eta(b)(1S) Upsilon(1S) chi(b0)(1P) chi(b1)(1P) h(b)(1P) chi(b2)(1P) Upsilon(2S) Upsilon(1D) chi(b0)(2P) chi(b1)(2P) h(b)(2P) chi(b2)(2P) Upsilon(3S) chi(b)(3P) Upsilon(4S) X(10610)+− X(10650)+− Upsilon(10860) Upsilon(11020) Collapse b bbar Mesons table NON-q qbar CANDIDATES Non-(q-qbar) Candidates Collapse Non-q qbar Candidates table Collapse Mesons table

BARYONS (p, n, Lambda_b, Xi, ...) N BARYONS (S = 0, I = 1/2) Note on N and Delta Resonances (rev.) p n N(1440) N(1520) N(1535) N(1650) N(1675) N(1680) N(1685) ?? N(1700) N(1710) N(1720) N(1860) 5/2+ N(1875) 3/2− N(1880) 1/2+ N(1895) 1/2− N(1900) N(1990) N(2000) N(2040) 3/2+ N(2060) 5/2− N(2100) N(2150) 3/2− N(2190) N(2220) N(2250) N(2600) N(2700) N(3000 Region) Collapse N Baryons table DELTA BARYONS (S = 0, I = 3/2) Note on N and Delta Resonances (rev.) Delta(1232) Delta(1600) Delta(1620) Delta(1700) Delta(1750) Delta(1900) Delta(1905) Delta(1910) Delta(1920) Delta(1930) Delta(1940) Delta(1950) Delta(2000) Delta(2150) Delta(2200) Delta(2300) Delta(2350) Delta(2390) Delta(2400) Delta(2420) Delta(2750) Delta(2950) Delta(3000 Region) Collapse Delta Bayons table LAMBDA BARYONS (S = -1, I = 0) Note on Lambda and Sigma Resonances (rev.) Lambda Lambda(1405) Lambda(1520) Lambda(1600) Lambda(1670) Lambda(1690) Lambda(1800) Lambda(1810) Lambda(1820) Lambda(1830) Lambda(1890) Lambda(2000) Lambda(2020) Lambda(2100) Lambda(2110) Lambda(2325) Lambda(2350) Lambda(2585) Collapse Lambda Baryons table SIGMA BARYONS (S = -1, I = 1) Note on Lambda and Sigma Resonances Sigma+ Sigma0 Sigma− Sigma(1385) Sigma(1480) Sigma(1560) Sigma(1580) Sigma(1620) Sigma(1620)PE Sigma(1660) Note on the Sigma(1670) Region Sigma(1670) Sigma(1670)B Sigma(1690)B Sigma(1750) Sigma(1770) Sigma(1775) Sigma(1840) Sigma(1880) Sigma(1915) Sigma(1940) Sigma(2000) Sigma(2030) Sigma(2070) Sigma(2080) Sigma(2100) Sigma(2250) Sigma(2455)B Sigma(2620)B Sigma(3000)B Sigma(3170)B Collapse Sigma Baryons table XI BARYONS (S = -2, I = 1/2) Note on Xi Resonances Xi0 Xi- Xi(1530) Xi(1620) Xi(1690) Xi(1820) Xi(1950) Xi(2030) Xi(2120) Xi(2250) Xi(2370) Xi(2500) Collapse Xi Baryons table OMEGA BARYONS (S = -3, I = 0) Omega- Omega(2250)- Omega(2380)- Omega(2470)- Collapse Omega Baryons table CHARMED BARYONS (C = +1) Note on Charmed Baryons (rev.) Lambda(c)+ Lambda(c)(2593)+ Lambda(c)(2625)+ Lambda(c)(2765)+ Lambda(c)(2880)+ Lambda(c)(2940)+ Sigma(c)(2455) Sigma(c)(2520) Sigma(c)(2800) Xi(c)+ Xi(c)0 Xi'(c)+ Xi'(c)0 Xi(c)(2645) Xi(c)(2790) Xi(c)(2815) Xi(c)(2930) Xi(c)(2980) Xi(c)(3055) Xi(c)(3080) Xi(c)(3123) Omega(c)0 Omega(c)(2770)0 Collapse Charmed Baryons table DOUBLY-CHARMED BARYONS (C = + 2) Xi(cc) Collapse Doubly-Charmed Baryons table BOTTOM BARYONS (B = -1) Lambda(b)0 Sigma(b) Sigma(b)* Xi(b)0, Xi(b)- Omega(b)- b-baryon Admixture (Lambda(b), Xi(b), Sigma(b), Omega(b)) Collapse Bottom Baryons table Collapse Baryons table

OTHER SEARCHES (SUSY, Compositeness, ...) Magnetic Monopole Searches Supersymmetric Particles Technicolor Searches for Quark and Lepton Compositeness Extra Dimensions WIMPs and Other Particle Searches Collapse Other Searches table