Neutrino Masses and Mixing Angles in SUSY-GUT Theories with explicit R-Parity Breaking

Details Neutrino Masses and Mixing Angles in SUSY-GUT Theories with explicit R-Parity Breaking Neutrino Masses and Mixing Angles in SUSY-GUT Theories with explicit R-Parity Breaking

1995-11-10

arxiv.org/abs/hep-ph/9511288v3

Nucl.Phys. B478 (1996) 3-30

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version as published in Nucl. Phys. B; several typos corrected

Scientific paper

10.1016/0550-3213(96)00412-9

In minimal SUSY GUT models the $R$-parity breaking terms are severely constrained by SU(5) gauge invariance. We consider the particular case where the explicit $R$-parity breaking occurs only via dimension 2 terms of the superpotential. This model possesses only three R-parity breaking parameters. We have studied the predictions of this model for the neutrino masses and mixing angles at the one-loop level within the framework of a radiatively broken unified supergravity model. We find that this model naturally yields masses and mixing angles that can explain the solar and atmospheric neutrino problems. In addition, there are regions in parameter space where the solution to the solar neutrino puzzle is compatible with either the LSND result or the existence of significant hot dark matter neutrinos.

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