1111.5859 (P. M. Ferreira et al.)

Seesaw neutrino masses from an $A_4$ model with two equal vacuum
expectation values    [PDF]

P. M. Ferreira, L. Lavoura

We present a model for the lepton sector, with $A_4$ horizontal-symmetry group, in which two of the Higgs doublets in an $A_4$ triplet of Higgs doublets have equal vacuum expectation values. The model makes well-defined predictions for the effective light-neutrino Majorana mass matrix. We show that those predictions are compatible with the experimental data.

View original: http://arxiv.org/abs/1111.5859