Models of Neutrino Masses and Mixings: a Progress Report

TL;DR

This paper reviews recent advances in theoretical models for neutrino masses and mixings, focusing on discrete symmetry approaches like A4 and addressing challenges in extending these models to quarks and grand unification.

Contribution

It provides an overview of the progress in model building for neutrino properties, highlighting the use of discrete groups and the difficulties in unifying quark and lepton sectors.

Findings

Tri-bimaximal mixing derived from A4 symmetry

Challenges in extending models to quark sector

Issues with grand unification integration

Abstract

We present some recent developments on model building for neutrino masses and mixings. In particular, we review tri-bimaximal neutrino mixing derived from discrete groups, notably A4. We discuss the problems encountered with extending the symmetry to the quark sector and with Grand Unification.