FCNC, CP violation, and impure Majorana neutrinos

Details FCNC, CP violation, and impure Majorana neutrinos FCNC, CP violation, and impure Majorana neutrinos

1996-12-05

arxiv.org/abs/hep-ph/9612271v3

Phys.Rev. D56 (1997) 1522-1527; Erratum-ibid. D56 (1997) 7472

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 page, 1 figure. Minor corrections, Latex file

Scientific paper

10.1103/PhysRevD.56.1522

The tree level diagonalization of a neutrino mass matrix with both Majorana and Dirac masses is discussed in a general context. Flavor changing neutral currents in such models are inevitable. Rephasing invariant quantities characterizing CP violation in FCNC Fermion-Higgs interactions are identified. At the one loop level, the mass eigenstates become an impure Majorana type. The possibility of a significant change in the mass spectrum for the left-handed neutrinos is explored, with an example of two species of neutrinos. Neutrino oscillations with impure Majorana neutrinos are also discussed.

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