# Electroweak Baryogenesis from Temperature-Varying Couplings

## TL;DR

This paper explores how temperature-dependent variations in fundamental couplings, beyond standard RG evolution, could facilitate electroweak baryogenesis within an extended Standard Model framework.

## Contribution

It introduces the concept that temperature-varying couplings can enhance baryogenesis, analyzing this effect with higher-dimensional operators in the Standard Model.

## Key findings

- Temperature variation of couplings can increase baryon asymmetry production.
- Higher-dimensional operators up to dimension 6 are effective in this mechanism.
- The approach offers a new avenue for explaining matter-antimatter asymmetry.

## Abstract

The fundamental couplings of the Standard Model are known to vary as a function of energy scale through the Renormalisation Group (RG), and have been measured at the electroweak scale at colliders. However, the variation of the couplings as a function of temperature need not be the same, raising the possibility that couplings in the early universe were not at the values predicted by RG evolution. We study how such temperature-variance of fundamental couplings can aid the production of a baryon asymmetry in the universe through electroweak baryogenesis. We do so in the context of the Standard Model augmented by higher-dimensional operators up to dimension 6.