KARMEN Limits on nu_e -> nu_tau Oscillations in 2-neutrino and 3-neutrino Mixing Schemes

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dc.creatorArmbruster, B.
dc.creatorBlair, I.
dc.creatorBodmann, B. A.
dc.creatorBooth, N. E.
dc.creatorDrexlin, G.
dc.creatorEberhard, V.
dc.creatorEdgington, J. A.
dc.creatorEichner, C.
dc.creatorEitel, K.
dc.creatorFinckh, E.
dc.creatorGemmeke, H.
dc.creatorHoessl, J.
dc.creatorJannakos, T.
dc.creatorJuenger, P.
dc.creatorKleifges, M.
dc.creatorKleinfeller, J.
dc.creatorKretschmer, W.
dc.creatorMaschuw, R.
dc.creatorOehler, C.
dc.creatorPlischke, P.
dc.creatorRapp, J.
dc.creatorRuf, C.
dc.creatorSteidl, M.
dc.creatorStumm, O.
dc.creatorWolf, J.
dc.creatorZeitnitz, B.
dc.date1998-01-08
dc.date.accessioned2026-07-07T11:08:51Z
dc.date.available2026-07-07T11:08:51Z
dc.descriptionThe 56 tonne high resolution liquid scintillation calorimeter KARMEN at the beam stop neutrino source ISIS has been used to search for neutrino oscillations in the disappearance channel nu_e->x. The nu_e emitted in mu+ decay at rest are detected with spectroscopic quality via the exclusive charged current reaction 12-C(nu_e,e-)12-N_g.s. almost free of background. Analysis of the spectral shape of e- from the nu_e induced reaction as well as a measurement of the absolute nu_e flux allow to investigate oscillations of the type nu_e->nu_tau and nu_e->nu_mu . The flux independent ratio R(CC/NC) of charged current events 12-C(nu_e,e-)12-N_g.s. to neutral current events 12-C(nu,nu')12-C* provides additional information in the oscillation channel nu_e->x . All three analysis methods show no evidence for oscillations. For the nu_e->nu_tau channel 90%CL limits of sin^2(2t)<0.338 for dm^2>100eV^2 and dm^2<0.77eV^2 for maximal mixing in a simple 2 flavor oscillation formalism are derived. A complete 3 flavor analysis of the experimental data from five years of measurement with respect to nu_e<->nu_tau and nu_e<->nu_mu mixing is presented.
dc.description20 pages including 13 figures, submitted to Phys.Rev.C
dc.identifierhttps://arxiv.org/abs/hep-ex/9801007
dc.identifierhttp://arxiv.org/abs/hep-ex/9801007
dc.identifierPhys.Rev.C57:3414-3424,1998
dc.identifierdoi:10.1103/PhysRevC.57.3414
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190276
dc.subjectHigh Energy Physics - Experiment
dc.titleKARMEN Limits on nu_e -> nu_tau Oscillations in 2-neutrino and 3-neutrino Mixing Schemes
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