A Natural Framework for Bi-large Neutrino Mixing
Abstract
In this letter we present a "natural" framework for obtaining bi-large neutrino mixing incorporating the FGY neutrino mass matrix ansatz. We show that an SU(2) × U(1) family symmetry can provide the desired FGY neutrino mass ansatz in the MSSM. We also show how to obtain an approximate FGY ansatz in an SO(10) SUSY GUT. In this context, the same SU(2) × U(1) family symmetry also generates the hierarchy of fermion masses as well as ameliorating SUSY flavor problems.
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