Mass bounds for baryogenesis from particle decays and the inert doublet model

TL;DR

This paper explores lowering the energy scale for baryogenesis via particle decays within the inert doublet model, establishing mass bounds and examining the simultaneous explanation of dark matter, neutrino masses, and baryon asymmetry.

Contribution

It presents new lower bounds on particle masses for baryogenesis in the inert doublet model and discusses how to extend these results to other models.

Findings

Lower bounds on decaying particle masses for baryogenesis.

Feasibility of explaining dark matter, neutrino masses, and baryon asymmetry simultaneously.

Method to extrapolate results to other scenarios.

Abstract

In models for thermal baryogenesis from particle decays, the mass of the decaying particle is typically many orders of magnitude above the TeV scale. We will discuss different ways to lower the energy scale of baryogenesis and present the corresponding lower bounds on the particle's mass. This is done specifically for the inert doublet model with heavy Majorana neutrinos and then we indicate how to extrapolate the results to other scenarios. We also revisit the question of whether or not dark matter, neutrino masses, and the cosmic baryon asymmetry can be explained simultaneously at low energies in the inert doublet model.