Measurement of the heavy neutrino admixture upper limit from muon capture by He-3

Schott, W;Deutsch, Jules;Govaerts, Jan;Prieels, René;et.al.
(2004) International Symposium on Muon Catalyzed Fusion and the Physics of Exotic Atoms and Molecules (muCF-95) — Location: DUBNA(Russia) (19.June.1995)

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Authors
  • Schott, W
    Author
  • Deutsch, JulesUCLouvain
    Author
  • Govaerts, Janorcid-logoUCLouvain
    Author
  • Prieels, RenéUCLouvain
    Author
  • et. al.
Abstract
The triton energy spectrum of the muon capture reaction mu(3)He --> t + v(mu), where mu(3)He is the ground state of muonic He-3, has been measured by means of a high-pressure ionization chamber in order to investigate a possible heavy v admixture into the mu flavor with high sensitivity. The upper limit of the mu-heavy v(i) mixing matrix element squared was obtained to be U-mu i((2) less than or equal to 10(-3) for heavy neutrino masses in the range 25 less than or equal to E(ov) less than or equal to 75 MeV.
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Schott, W., Deutsch, J., Govaerts, J., Prieels, R., & et al. (2004). Measurement of the heavy neutrino admixture upper limit from muon capture by He-3. Hyperfine Interactions, 102, 445-449. https://doi.org/10.1007/BF02227655 (Original work published 2004)