Lepton flavor mixing and baryogenesis

TL;DR

This paper explores how extending a flavor symmetry-based quark mass matrix ansatz to leptons impacts neutrino masses and the universe's baryon asymmetry, linking flavor symmetries to cosmological phenomena.

Contribution

It introduces a novel extension of a flavor symmetry to the lepton sector and analyzes its implications for neutrino masses and baryogenesis.

Findings

Neutrino mass matrix structure derived from extended symmetry

Potential explanation for baryon asymmetry via leptogenesis

Connections between flavor symmetry and cosmological observations

Abstract

Recently a new general class of quark mass matrix ansatz has been proposed, which originates from some flavor symmetry. We extend that symmetry to the lepton sector and study the neutrino mass matrix and address the question of the baryon asymmetry of the universe in this model.