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arXiv · hep-ph/9811463

Atmospheric and Solar Neutrino Oscillations in \nuMSSM and Beyond

Qaisar Shafi·Zurab Tavartkiladze
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Abstract

We show how a unified description of the various two-flavor neutrino oscillation solutions, allowed by the atmospheric and solar neutrino experiments, are naturally realized within the framework of $ν$MSSM (MSSM augmented with the seesaw mechanism) and beyond, especially grand unified theories. A general mechanism for achieving maximal mixing to resolve the atmospheric anomaly is discussed, and applied to the flipped SU(5) model. Except in the case of MSSM and SU(5), a light sterile neutrino is an inevitable consequence of our considerations. The bi-maximal neutrino mixing scenario is one of the options considered. Neutrino hot dark matter can arise in models with maximal $ν_μ-ν_s$ oscillations. A ${\cal U}(1)$ flavor symmetry, motivated by the charged fermion mass hierarchies and the magnitudes of the CKM matrix elements, plays a central role.

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Qaisar Shafi, Zurab Tavartkiladze. 1999-02-11. Atmospheric and Solar Neutrino Oscillations in \nuMSSM and Beyond. https://doi.org/10.1016/s0370-2693(99)00037-4

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