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Prog. Theor. Phys. Vol. 67 No. 1 (1982) pp. 281-296

[ Full Text PDF : FREE ACCESS (698K) ]

Majorana Neutrinos and µ-Decay

Masaru Doi*, Tsuneyuki Kotani, Hiroyuki Nishiura**, Kazuko Okuda and Eiichi Takasugi

Institute of Physics, College of General Education, Osaka University, Toyonaka 560
*Osaka College of Pharmacy, Matsubara, Osaka 580
**Research Institute for Fundamental Physics, Kyoto University, Kyoto 606

(Received August 3, 1981)

Abstract:

The µ-decay is analyzed as a tool to determine whether neutrinos are Majorana or Dirac particles, within the framework of the effective weak interaction Hamiltonian with the (V±A) currents. If the CP-violating term nµ·(pe×ne) is detected where n stands for the polarization vector, this observation indicates the following facts; the Majorana property of neutrino, the existence of the right-handed current, the non-zero mixing between electron- and muon-neutrinos and the non-zero CP-violating phases in the leptonic sector. Various characters of quantities such as energy spectrum and (pe×nµ)·(pe×ne) for Majorana neutrinos are compared with those for Dirac neutrinos. It is argued that the complex phases intrinsic to the Majorana neutrino system are really the CP-violating phases.


URL : http://ptp.ipap.jp/link?PTP/67/281/
DOI : 10.1143/PTP.67.281

[ Full Text PDF : FREE ACCESS (698K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 70 No. 5 (1983) pp. 1331-1352 :
    Pseudo Dirac Neutrino
    Masaru Doi, Masakatsu Kenmoku, Tsuneyuki Kotani, Hiroyuki Nishiura and Eiichi Takasugi
  2. Progress of Theoretical Physics Vol. 70 No. 5 (1983) pp. 1353-1374 :
    The Energy Spectrum and the Angular Correlation in the ββ Decay
    Masaru Doi, Tsuneyuki Kotani, Hiroyuki Nishiura and Eiichi Takasugi
  3. Progress of Theoretical Physics Vol. 71 No. 6 (1984) pp. 1440-1442 :
    Muon Decay and the Majorana Neutrino
    Masaru Doi, Tsuneyuki Kotaniand Eiichi Takasugi
  4. Progress of Theoretical Physics Vol. 84 No. 6 (1990) pp. 1036-1041 :
    Inverse Muon Decay in the Gauge Theory
    Masaru Doi
  5. Progress of Theoretical Physics Vol. 114 No. 4 (2005) pp. 845-871 :
    New Parameterization in Muon Decay and the Type of Emitted Neutrino
    Masaru Doi, Tsuneyuki Kotani and Hiroyuki Nishiura
  6. Progress of Theoretical Physics Vol. 118 No. 6 (2007) pp. 1069-1086 :
    New Parameterization in Muon Decay and the Type of Emitted Neutrino. II
    Masaru Doi, Tsuneyuki Kotani and Hiroyuki Nishiura
  7. Progress of Theoretical Physics Supplement No.83 (1985) pp. 1-175 :
    Double Beta Decay and Majorana Neutrino
    Masaru Doi, Tsuneyuki Kotani and Eiichi Takasugi

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