The KARMEN Time Anomaly: Search for a Neutral Particle of Mass 33.9 MeV in Pion Decay

Simple item page
dc.creatorDaum, M.
dc.creatorJanousch, M.
dc.creatorKettle, P-R.
dc.creatorKoglin, J.
dc.creatorPocanic, D.
dc.creatorSchotmueller, J.
dc.creatorWigger, C.
dc.creatorZhao, Z. G.
dc.date2000-08-08
dc.date.accessioned2026-07-07T10:32:04Z
dc.date.available2026-07-07T10:32:04Z
dc.descriptionWe have searched for the pion decay pi^+ --> mu^+ X, where X is a neutral particle of mass 33.905 MeV. This process was suggested by the KARMEN Collaboration to explain an anomaly in their observed time distribution of neutrino induced reactions. Having measured the muon momentum spectrum of charged pions decaying in flight, we find no evidence for this process and place an upper limit on the branching fraction eta leq 6.0 * 10^{-10} of such a decay at a 95% confidence level.
dc.description17 pages including 4 for figures
dc.identifierhttps://arxiv.org/abs/hep-ex/0008014
dc.identifierhttp://arxiv.org/abs/hep-ex/0008014
dc.identifierPhys.Rev.Lett.85:1815-1818,2000
dc.identifierdoi:10.1103/PhysRevLett.85.1815
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178630
dc.subjectHigh Energy Physics - Experiment
dc.titleThe KARMEN Time Anomaly: Search for a Neutral Particle of Mass 33.9 MeV in Pion Decay
dc.typetext

Files

Collections

arXiv