Remarks on the KARMEN anomaly

作者: V Barger , R.J.N Phillips , S Sarkar

DOI: 10.1016/0370-2693(95)00486-5

关键词: ObservableTime structureKARMENNuclear physicsParticle physicsAnomaly (physics)PhysicsNeutrinoMixing (physics)DetectorNeutrino detector

摘要: A recently reported anomaly in the time structure of signals KARMEN neutrino detector suggests decay a new particle x, produced � + → µ x with mass mx = 33.9 MeV. We discuss constraints and difficulties interpreting as neutrino. show that mainly-sterile scenario is compatible all laboratory constraints, within narrow limits on mixing parameters, although there are problems astrophysical cosmological constraints. This predicts appreciable numbers other x-decay events different origins structures should also be observable detector. Such found LSND experiment may relevant to search for ¯ �µ �e oscillations.

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