A Natural Framework for Bi-large Neutrino Mixing

Details A Natural Framework for Bi-large Neutrino Mixing A Natural Framework for Bi-large Neutrino Mixing

2003-02-04

arxiv.org/abs/hep-ph/0302027v3

Phys.Lett. B561 (2003) 119-124

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, no figures, extended discussion of standard model version including charged lepton analysis

Scientific paper

10.1016/S0370-2693(03)00421-0

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 $SU(2) \times U(1)$ 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 $SU(2) \times U(1)$ family symmetry also generates the hierarchy of fermion masses as well as ameliorating SUSY flavor problems.

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