Models for neutrino mass with discrete symmetries

TL;DR

This paper analyzes how discrete non-abelian flavor symmetries can produce tri-bimaximal neutrino mixing and explores potential deviations from this pattern in a model-independent way.

Contribution

It provides a model-independent analysis of the neutrino mass pattern based on discrete symmetries, highlighting possible deviations from TBM mixing.

Findings

Tri-bimaximal mixing can naturally arise from discrete non-abelian symmetries.

Small deviations from TBM are possible and analyzed.

The analysis is model-independent, allowing broad applicability.

Abstract

Discrete non-abelian flavor symmetries give in a natural way tri-bimaximal (TBM) mixing as showed in a prototype model. However neutrino mass matrix pattern may be very different from the tri-bimaximal one if small deviations of TBM will be observed. We give the result of a model independent analysis for TBM neutrino mass pattern.