SEARCH FOR HEAVY NEUTRINO DECAYS IN THE BEBC BEAM DUMP EXPERIMENT

SEARCH FOR HEAVY NEUTRINO DECAYS IN THE BEBC BEAM DUMP EXPERIMENT

New limits on lepton mixing parameters are derived from a search for decays of heavy neutrinos in a proton beam dump experiment. The limits |Uøi|2, |Uei|2 < 10-6-10-7 are obtained for neutrino mass eigenstates vi of mass between 0.5 and 1.75 GeV, which can be produced through mixing in charme...

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Bibliographic Details
Main Authors: Coopersarkar, A, Haywood, S, Parker, M, Sarkar, S, Barnham, K, Bostock, P, Facciniturluer, M, Grassler, H, Guy, J, Hulth, P, Hultqvist, K, Idschok, U, Klein, H, Kreutzmann, H, Krstic, J, Mobayyen, M, Morrison, D, Nellen, B, Talebzadeh, M, Venus, W, Vignaud, D, Wachsmuth, H, Wittek, W, Wunsch, B
Format: Journal article
Language:English
Published: 1985
Description
Summary:New limits on lepton mixing parameters are derived from a search for decays of heavy neutrinos in a proton beam dump experiment. The limits |Uøi|2, |Uei|2 < 10-6-10-7 are obtained for neutrino mass eigenstates vi of mass between 0.5 and 1.75 GeV, which can be produced through mixing in charmed D meson decays. This is the first such limit on |Uøi|2 for neutrino masses greater than 0.5 GeV. For the mass eigenstate v3 in particular, we obtain the limits |Uø3|2 < 10-7-10-8, |Ue3|2 < 10-9-10-10 for the mass range 150-190 MeV, assuming the v3 to be produced directly in charmed F meson decays. © 1985.

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