rpp2010-tab-baryons-N

rpp2010-tab-baryons-N - Citation: K. Nakamura et al....

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Citation: K. Nakamura et al. (Particle Data Group), JP G 37 , 075021 (2010) (URL: http://pdg.lbl.gov) N BARYONS N ( S =0 , I = 1/2) S , p , N + = uud ; n , N 0 = udd p I ( J P )= 1 2 ( 1 2 + ) Mass m =1 . 00727646677 ± 0 . 00000000010 u Mass m = 938 . 272013 ± 0 . 000023 MeV [ a ] ¯ ¯ m p m p ¯ ¯ / m p < 2 × 10 9 , CL = 90% [ b ] ¯ ¯ q p m p ¯ ¯ /( q p m p )=0 . 99999999991 ± 0 . 00000000009 ¯ ¯ q p + q p ¯ ¯ / e < 2 × 10 9 , CL = 90% [ b ] ¯ ¯ q p + q e ¯ ¯ / e < 1 . 0 × 10 21 [ c ] Magnetic moment μ =2 . 792847356 ± 0 . 000000023 μ N ( μ p + μ p ) ± μ p =( 0 . 1 ± 2 . 1) × 10 3 Electric dipole moment d < 0 . 54 × 10 23 e cm Electric polarizability α =(12 . 0 ± 0 . 6) × 10 4 fm 3 Magnetic polarizability β =(1 . 9 ± 0 . 5) × 10 4 fm 3 Charge radius = 0 . 877 ± 0 . 007 fm Mean life τ> 2 . 1 × 10 29 years, CL = 90% [ d ] ( p invisible mode) Mean life 10 31 to 10 33 years [ d ] (mode dependent) HTTP://PDG.LBL.GOV Page 1 Created: 10/26/2010 11:51
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Citation: K. Nakamura et al. (Particle Data Group), JP G 37 , 075021 (2010) (URL: http://pdg.lbl.gov) See the “Note on Nucleon Decay” in our 1994 edition (Phys. Rev. D50 D50 D50 D50, 1173) for a short review. The “partial mean life” limits tabulated here are the limits on τ /B i ,where τ is the total mean life and B i is the branching fraction for the mode in question. For N decays, p and n indicate proton and neutron partial lifetimes. Partial mean life p p DECAY MODES p DECAY MODES p p (10 30 years) Con±dence level (MeV/ c ) Antilepton + meson Antilepton + meson N e + π > 158 ( n ), > 8200 ( p ) 90% 459 N μ + π > 100 ( n ), > 6600 ( p ) 90% 453 N νπ > 112 ( n ), > 25 ( p ) 90% 459 p e + η > 313 90% 309 p μ + η > 126 90% 297 n νη > 158 90% 310 N e + ρ > 217 ( n ), > 75 ( p ) 90% 149 N μ + ρ > 228 ( n ), > 110 ( p ) 90% 113 N νρ > 19 ( n ), > 162 ( p ) 90% 149 p e + ω > 107 90% 143 p μ + ω > 117 90% 105 n νω > 108 90% 144 N e + K > 17 ( n ), > 150 ( p ) 90% 339 p e + K 0 S > 120 90% 337 p e + K 0 L > 51 90% 337 N μ + K > 26 ( n ), > 120 ( p ) 90% 329 p μ + K 0 S > 150 90% 326 p μ + K 0 L > 83 90% 326 N ν K > 86 ( n ), > 670 ( p ) 90% 339 n ν K 0 S > 51 90% 338 p e + K (892) 0 > 84 90% 45 N ν K (892) > 78 ( n ), > 51 ( p ) 90% 45 Antilepton + mesons Antilepton + mesons Antilepton + mesons Antilepton + mesons p e + π + π > 82 90% 448 p e + π 0 π 0 > 147 90% 449 n e + π π 0 > 52 90% 449 p μ + π + π > 133 90% 425 p μ + π 0 π 0 > 101 90% 427 n μ + π π 0 > 74 90% 427 n e + K 0 π > 18 90% 319 HTTP://PDG.LBL.GOV Page 2 Created: 10/26/2010 11:51
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Citation: K. Nakamura et al. (Particle Data Group), JP G 37 , 075021 (2010) (URL: http://pdg.lbl.gov) Lepton + meson Lepton + meson Lepton + meson Lepton + meson n e π + > 65 90% 459 n μ π + > 49 90% 453 n e ρ + > 62 90% 150 n μ ρ + > 7 90% 114 n e K + > 32 90% 340 n μ K + > 57 90% 330 Lepton + mesons Lepton + mesons p e π + π + > 30 90% 448 n e π + π 0 > 29 90% 449 p μ π + π + > 17 90% 425 n μ π + π 0 > 34 90% 427 p e π + K + > 75 90% 320 p μ π + K + > 245 90% 279 Antilepton + photon(s) Antilepton + photon(s) p e + γ > 670 90% 469 p μ + γ > 478 90% 463 n νγ > 28 90% 470 p e + γγ > 100 90% 469 n νγγ > 219 90% 470 Three (or more) leptons Three (or more) leptons p e + e + e > 793 90% 469 p e + μ + μ > 359 90% 457 p e + νν > 17 90% 469 n e + e ν > 257 90% 470 n μ + e ν > 83 90% 464 n μ + μ ν > 79 90% 458 p μ + e + e > 529 90% 463 p μ + μ + μ > 675 90% 439 p μ + > 21 90% 463 p e μ + μ + > 6 90% 457 n 3 ν > 0 . 0005 90% 470 Inclusive modes Inclusive modes Inclusive modes Inclusive modes N e + anything > 0 .
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rpp2010-tab-baryons-N - Citation: K. Nakamura et al....

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