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Feasibility of an experiment to determine the branching ratio for the emission of a heavy neutrino after muon capture in3He |
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| Authors: | W. Schott V. N. Baturin W. H. Breunlich T. Case H. Daniel F. J. Hartmann M. Jeitler P. Kammel K. Lou E. M. Maev J. Marton M. Mühlbauer C. Petitjean G. E. Petrov Yu. V. Petrov G. G. Semenchuk Yu. V. Smirenin A. A. Vorobyov P. Wojciechowski J. Zmeskal |
| Affiliation: | (1) Physik-Department, Technische Universität München, D-85747 Garching, Germany;(2) St. Petersburg Nuclear Physics Institute, 188350 Gatchina, St. Petersburg District, Russia;(3) Österreichische Akademie der Wissenschaften, Institut für Mittelenergiephysik, A-1090 Vienna, Austria;(4) Lawrence Berkeley Laboratory and University of California, 94720 Berkeley, CA, USA;(5) Paul Scherrer Institute, CH-5232 Villigen, Switzerland |
| Abstract: | The triton energy of the muon capture reaction  3He  t+v, where 3 He is the ground state of muonic3He, has been measured in order to investigate a possible heavy v admixture into the flavour with high sensitivity. 3 He has been formed via the pd fusion reaction by stopping – in an ionization chamber (IC) filled with an H/D gas mixture of 3% D concentration at a pressure of 161 bar. In a first short experiment 650 triton events were observed yielding an upper limit for the -heavy v mixing strength of 2.3×10–3 atE0v=60 MeV. |
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