Higgsogenesis

TL;DR

This paper proposes a novel cosmological mechanism where the Higgs boson mediates asymmetries between visible and dark matter, potentially explaining matter-antimatter asymmetry through interactions involving new fermions.

Contribution

It introduces a new Higgs-mediated asymmetry transfer mechanism between dark and visible matter sectors, with a simple fermion model and potential observable signatures.

Findings

Higgs chemical potential can generate matter asymmetries

A simple fermion model illustrates the mechanism

Potential experimental signatures discussed

Abstract

In addition to explaining the masses of elementary particles, the Higgs boson may have far-reaching implications for the generation of the matter content in the Universe. For instance, the Higgs plays a key role in two main theories of baryogenesis, namely electroweak baryogenesis and leptogenesis. In this letter, we propose a new cosmological scenario where the Higgs chemical potential mediates asymmetries between visible and dark matter sectors, either generating a baryon asymmetry from a dark matter asymmetry or vice-versa. We illustrate this mechanism with a simple model with two new fermions coupled to the Higgs and discuss associated signatures.