Theoretical Models for Neutrino Masses

TL;DR

This paper examines how recent neutrino measurements challenge existing flavor models based on discrete groups, highlighting tensions and constraints from lepton flavor violation processes.

Contribution

It provides a theoretical analysis of the impact of recent neutrino data on discrete flavor models and discusses constraints from lepton flavor violating processes.

Findings

Reactor angle measurements challenge existing flavor models

Lepton flavor violation processes impose strong constraints

Certain mixing patterns face tensions with new data

Abstract

The recent measurements of the neutrino reactor angle require a re-examination of flavour models based on discrete groups. Indeed, when these models deal with the Tri-Bimaximal, the Bimaximal and the Golden Ratio mixing patterns, some tensions arise in order to accommodate the reactor angle. In particular, strong constraints come from lepton flavour violating processes, like mu -> e gamma. We present the analysis and the main results.