NATURALLY PERTURBED S3 NEUTRINOS

Abstract

We simplify and extend our previous model for the masses and mixing matrix of three Majorana neutrinos based on permutation symmetry S3 and the perturbations which violate this symmetry. The perturbations are arranged such that we get the smaller solar neutrinos mass difference at second-order. We work out the corrections to the tribimaximal mixing matrix with the nonzero value for s13 and the conventional CP-violating phase. It is shown that the results of the model are comparable with the global analysis of neutrino oscillation data.