Evidence for the Decay Sigma+ -> p mu+ mu-

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dc.creatorPark, H. K.
dc.creatorBurnstein, R. A.
dc.creatorChakravorty, A.
dc.creatorChen, Y. C.
dc.creatorChoong, W. S.
dc.creatorClark, K.
dc.creatorDukes, E. C.
dc.creatorDurandet, C.
dc.creatorFelix, J.
dc.creatorFu, Y.
dc.creatorGidal, G.
dc.creatorGustafson, H. R.
dc.creatorHolmstrom, T.
dc.creatorHuang, M.
dc.creatorJames, C.
dc.creatorJenkins, C. M.
dc.creatorJones, T.
dc.creatorKaplan, D. M.
dc.creatorLederman, L. M.
dc.creatorLeros, N.
dc.creatorLongo, M. J.
dc.creatorLopez, F.
dc.creatorLu, L. C.
dc.creatorLuebke, W.
dc.creatorLuk, K. B.
dc.creatorNelson, K. S.
dc.creatorPerroud, J. -P.
dc.creatorRajaram, D.
dc.creatorRubin, H. A.
dc.creatorVolk, J.
dc.creatorWhite, C. G.
dc.creatorWhite, S. L.
dc.creatorZyla, P.
dc.date2005-01-07
dc.date2005-01-24
dc.date.accessioned2026-07-07T11:43:13Z
dc.date.available2026-07-07T11:43:13Z
dc.descriptionWe report the first evidence for the decay Sigma+ -> p mu+ mu- from data taken by the HyperCP experiment(E871) at Fermilab. Based on three observed events, the branching ratio is B(Sigma+ -> p,mu+,mu-) = [8.6 +6.6,-5.4(stat) +/-5.5(syst)] x 10**-8. The narrow range of dimuon masses may indicate that the decay proceeds via a neutral intermediate state, Sigma+ -> p P0, P0 -> mu+ mu-, with a P0 mass of 214.3 +/- 0.5 MeV/c**2 and branching ratio B(Sigma+ -> p P0; P0 -> mu+ mu-) = [3.1 +2.4,-1.(stat) +/-1.5(syst)] x 10**-8.
dc.descriptionAs published in PRL
dc.identifierhttps://arxiv.org/abs/hep-ex/0501014
dc.identifierhttp://arxiv.org/abs/hep-ex/0501014
dc.identifierPhys.Rev.Lett.94:021801,2005
dc.identifierdoi:10.1103/PhysRevLett.94.021801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201162
dc.subjectHigh Energy Physics - Experiment
dc.titleEvidence for the Decay Sigma+ -> p mu+ mu-
dc.typetext

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