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Measurement of the heavy neutrino admixture upper limit from muon capture by3He

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Abstract

The triton energy spectrum of the muon capture reaction µ3He→t+νµ where µ3He is the ground state of muonic3He, has been measured by means of a high-pressure ionization chamber in order to investigate a possible heavyv admixture into the µ flavor with high sensitivity. The upper limit of the µ-heavy vi mixing matrix element squared was obtained to be ∣Uµi∣2⩽10−3 for heavy neutrino masses in the range of 25⩽ E0V⩽75 MeV.

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Authors and Affiliations

  1. Technische Universität München, D-85747, Garching, Germany

    W. Schott, S. Müller, H. Daniel, T. von Egidy, F. J. Hartmann, M. Mühlbauer & P. Wojciechowski

  2. Austrian Academy of Sciences, A-1090, Vienna, Austria

    P. Ackerbauer, W. H. Breunlich, P. Kammel, B. Lauss, J. Marton & W. Prymas

  3. St. Petersburg Nuclear Physics Institute, 188350, Gatchina, Russia

    D. V. Balin, V. N. Baturin, Yu. S. Grigoriev, E. M. Maev, G. E. Petrov, G. G. Semenchuk, Yu. V. Smirenin, A. A. Vorobyov & N. I. Voropaev

  4. University of Victoria, V8W 2Y2, Victoria, B.C., Canada

    G. A. Beer

  5. University of California, Berkeley

    T. Case & K. M. Crowe

  6. Lawrence Berkeley Laboratory, 94720, Berkeley, CA, USA

    T. Case & K. M. Crowe

  7. Université Catholique de Louvain, B-1348, Louvain-la-Neuve, Belgium

    J. Deutsch, J. Govaerts & R. Prieels

  8. Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland

    J. Egger, C. Petitjean, T. Petitjean & B. Van den Brandt

  9. Russian National Center I. V. Kurchatov Institute, 123182, Moscow, Russia

    V. Markushin

Authors
  1. W. Schott
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  2. S. Müller
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  3. H. Daniel
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  4. P. Ackerbauer
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  5. D. V. Balin
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  6. V. N. Baturin
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  7. G. A. Beer
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  8. W. H. Breunlich
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  9. T. Case
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  10. K. M. Crowe
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  11. J. Deutsch
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  12. J. Egger
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  13. T. von Egidy
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  14. J. Govaerts
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  15. Yu. S. Grigoriev
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  16. F. J. Hartmann
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  17. P. Kammel
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  18. B. Lauss
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  19. E. M. Maev
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  20. V. Markushin
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  21. J. Marton
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  22. M. Mühlbauer
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  23. C. Petitjean
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  24. T. Petitjean
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  25. G. E. Petrov
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  26. R. Prieels
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  27. W. Prymas
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  28. G. G. Semenchuk
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  29. Yu. V. Smirenin
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  30. B. Van den Brandt
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  31. A. A. Vorobyov
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  32. N. I. Voropaev
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  33. P. Wojciechowski
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Schott, W., Müller, S., Daniel, H. et al. Measurement of the heavy neutrino admixture upper limit from muon capture by3He. Hyperfine Interact 101, 445–449 (1996). https://doi.org/10.1007/BF02227655

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