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Measurements of the muon-neutrino mass

  • M. Daum
  • R. Frosch
  • D. Herter
  • M. Janousch
  • P.-R. Kettle
Conference paper

Abstract

The most precise upper limits for the muonneutrino mass m have been obtained by measuring the muon momentum p μ+ in pion decay π + →μ + ν μ at rest. The current result for the squared neutrino mass, m νμ 2 = -0.154 ± 0.045 MeV 2 , negative by 3.4 standard deviations, indicates that the experimental value for at least one of the three quantities used in the (m νμ 2 )- derivation (p μ +, m π+ , m μ +) is wrong.

Keywords

Neutrino Mass Pion Mass Pion Decay Muon Spectrum Muon Momentum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Particle Data Group, Phys. Lett. B 239 (1990).Google Scholar
  2. 2.
    R. Abela et al., Phys. Lett. B 146 (1984) 431.ADSCrossRefGoogle Scholar
  3. 3.
    H.B. Anderhub et al., Phys. Lett. B 114 (1982) 72.ADSGoogle Scholar
  4. 4.
    A.L. Clark et al., Phys. Rev. D 9 (1974) 533.ADSCrossRefGoogle Scholar
  5. 5.
    J. Missimer et al., Nuc. Phys. B 188 (1981) 29.ADSCrossRefGoogle Scholar
  6. 6.
    J. Egger, W. Glöckle, private communications, 1991.Google Scholar
  7. 7.
    K. Junker, Nuc. Phys. A 407 (1983) 460.ADSCrossRefGoogle Scholar
  8. 8.
    B. Jeckelmann et al., Nuc. Phys. A 457 (1986) 709.ADSCrossRefGoogle Scholar
  9. 9.
    S. Thomann, Ph. D. thesis, ETH Zurich, 1990.Google Scholar
  10. 10.
    M. Daum et al., Phys. Lett. B 265 (1991), 425.ADSCrossRefGoogle Scholar
  11. 11.
    M. Janousch, Ph. D. thesis, University of Zurich, in preparation.Google Scholar
  12. 12.
    M. Daum et al., proposal R-87–01.2, PSI, 1990.Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • M. Daum
    • 1
  • R. Frosch
    • 1
  • D. Herter
    • 1
  • M. Janousch
    • 1
  • P.-R. Kettle
    • 1
  1. 1.Paul Scherrer InstituteVilligen-PSISwitzerland

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