Neutrino Physics and A4 matter assignments

TL;DR

This paper classifies A4 flavor symmetry assignments in neutrino physics, proposing criteria to distinguish them and exploring their extension to SO(10) grand unified models.

Contribution

It provides a systematic classification of A4 representations in neutrino models and introduces criteria to differentiate between various assignments, including extensions to grand unified theories.

Findings

Classification of A4 representations in neutrino models

Criteria to distinguish different A4 assignments

Feasibility of extending A4 to SO(10) GUT models

Abstract

Tribimaximal lepton mixing can be obtained assuming A4 flavour symmetry. Many possibilities have been explored in the literature and we give a classification in terms of A4 representations. We propose some phenomenological and theoretical criteria to distinguish between different assignment. As example we consider the possibility to extend A4 to SO(10) grand unified model.