A Common Framework for Dark Matter, Leptogenesis and Neutrino Masses

TL;DR

This paper presents a unified framework extending the Standard Model with a global U(1) symmetry, explaining neutrino masses, dark matter, and leptogenesis at the TeV scale through a seesaw mechanism.

Contribution

It introduces a novel model that simultaneously addresses neutrino masses, dark matter, and leptogenesis within a single theoretical framework.

Findings

Successful leptogenesis at the TeV scale demonstrated.

Constraints on scalar mass spectrum derived.

Dark Matter phenomenology discussed.

Abstract

We study a seesaw-type extension of the Standard Model in which the symmetry group is enlarged by a global U(1). We introduce adequate scalar and fermion representations which naturally explain the smallness of neutrino masses. With the addition of a viable scalar Dark Matter candidate, an original scenario of leptogenesis emerges. We solve the relevant set of Boltzmann equations and show how leptogenesis can be successfully implemented at the TeV scale. The constraints on the scalar mass spectrum are derived and the Dark Matter phenomenology is discussed.