Theoretical motivations for precision measurements of oscillation parameters

TL;DR

This paper explores the theoretical reasons for pursuing precise measurements of neutrino oscillation parameters, focusing on flavor symmetry models and matter-antimatter asymmetry origins, including new model-building approaches and leptogenesis mechanisms.

Contribution

It introduces a new flavor model-building approach using cross coupling in the flavon potential and a novel leptogenesis mechanism via phase transition.

Findings

Proposes a new flavor model-building method based on flavon potential cross coupling.

Introduces a novel leptogenesis mechanism involving phase transition.

Provides theoretical insights linking oscillation parameters to matter-antimatter asymmetry.

Abstract

We discuss two theoretical motivations of precision measurements of oscillation parameters. One is the guidance for flavour model building with flavour symmetries, and the other is the connection with the origin of matter-antimatter asymmetry. We also present our recent progress in these aspects, a new approach of flavour model building based on cross coupling in the flavon potential and a novel mechanism of leptogenesis via phase transition.