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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 |
| Institution: | (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 atE
0v=60 MeV. |
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