Model of Geometric Neutrino Mixing

Abstract

Current neutrino oscillation data from solar, atmospheric, and reactor experiments are consistent with the neutrino mixing matrix elements taking values sin^2θ_{12} = 1/3, sin^2θ_{23} = 1/2, and sin^2θ_{13}=0. We present a class of renormalizable gauge models which realize such a geometric mixing pattern naturally. These models, which are based on the non--Abelian discrete symmetry A_4, place significant restrictions on the neutrino mass spectrum, which we analyze. It is shown that baryogenesis via leptogenesis occurs quite naturally, with a single phase (determined from neutrino oscillation data) appearing in leptonic asymmetry and in neutrinoless double beta decay. Such predicted correlations would provide further tests of this class of models.

arXiv commentRevTex 15 pages with two figures

References in corpus (2)

• Solar neutrinos and 1-3 leptonic mixing
• Deconstruction and Bilarge Neutrino Mixing

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