Discrete symmetries and neutrino masses
Kim Siyeon
Abstract
We constructed a model of neutrino masses using Froggatt-Nielsen mechanism with U(1) × Z3 × Z2 flavor symmetry. The model predicts that (2/3)m2/m3 2θ13 at lepton number violating scale M1. It is shown that the small values for m2/m3 and θ13 are consequences of breaking discrete symmetries.
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