On using Cold Baryogenesis to constrain the Two-Higgs Doublet Model

TL;DR

This paper explores how Cold Baryogenesis within the Two-Higgs Doublet Model can be used to further constrain its parameter space, linking collider data with cosmological baryon asymmetry.

Contribution

It demonstrates a method to use baryogenesis requirements to refine the parameter space of the Two-Higgs Doublet Model based on collider constraints.

Findings

Successful baryogenesis imposes additional constraints on model parameters.

Numerical simulations of Cold Electroweak Baryogenesis are feasible and reliable.

The remaining parameter space can be significantly narrowed by cosmological considerations.

Abstract

We consider the creation of the cosmological baryon asymmetry in the Two Higgs Doublet Model. We imagine a situation where the masses of the five Higgs particles and the two Higgs vevs are constrained by collider experiments, and demonstrate how the requirement of successful baryogenesis can be used to further constrain the remaining 4-dimensional parameter space of the model. We numerically compute the asymmetry within the scenario of Cold Electroweak Baryogenesis, which is particularly straightforward to simulate reliably.