# Baryogenesis From Flavon Decays

## TL;DR

This paper proposes a novel mechanism where flavon decays generate the universe's baryon asymmetry by producing an asymmetry in right-handed electrons, linking fermion mass models to cosmological baryogenesis.

## Contribution

It introduces a new baryogenesis scenario involving flavon decay near the electroweak transition, connecting flavor physics with early universe asymmetry generation.

## Key findings

- Flavon decay can produce sufficient right-handed electron asymmetry.
- The mechanism operates close to the electroweak transition.
- It provides a viable explanation for the observed baryon asymmetry.

## Abstract

Many popular attempts to explain the observed patterns of fermion masses involve a flavon field. Such weakly coupled scalar fields tend to dominate the energy density of the universe before they decay. If the flavon decay happens close to the electroweak transition, the right-handed electrons stay out of equilibrium until the sphalerons shut off. We show that an asymmetry in the right-handed charged leptons produced in the decay of a flavon can explain the baryon asymmetry of the universe.