title: Baryogenesis and dark matter through a Higgs asymmetry.
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 boson 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 boson and discuss the associated signatures.
authors.affiliation: CERN Physics Department, Theory Division, CH-1211 Geneva 23, Switzerland and ICREA at IFAE, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain and Institut de Physique Théorique, CEA/Saclay, F-91191 Gif-sur-Yvette Cédex, France.
authors.forename: Géraldine
authors.initials: G
authors.lastname: Servant
authors.forename: Sean
authors.initials: S
authors.lastname: Tulin