Phenomenology of Pseudo Dirac Neutrinos

Details Phenomenology of Pseudo Dirac Neutrinos Phenomenology of Pseudo Dirac Neutrinos

2000-07-28

arxiv.org/abs/hep-ph/0007334v1

Phys.Lett. B494 (2000) 114-123

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages LATEX

Scientific paper

10.1016/S0370-2693(00)01148-5

We formulate general conditions on $3\times 3$ neutrino mass matrices under which a degenerate pair of neutrinos at a high scale would split at low scale by radiative corrections involving only the standard model fields. This generalizes the original observations of Wolfenstein on pseudo Dirac neutrinos to three generations. A specific model involving partially broken discrete symmetry and solving the solar and atmospheric anomalies is proposed. The symmetry pattern of the model naturally generates two large angles one of which can account for the large angle MSW solution to the solar neutrino problem.

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