Dark Matter and Leptogenesis in the Inverse Seesaw

TL;DR

This paper explores an extended Standard Model with a global U(1) symmetry, introducing new particles to explain neutrino masses, dark matter, and leptogenesis in a unified framework.

Contribution

It proposes a novel inverse seesaw model with a scalar dark matter candidate that naturally accounts for neutrino masses and generates leptogenesis.

Findings

Successful leptogenesis scenario demonstrated

Neutrino masses explained via inverse seesaw mechanism

Scalar dark matter candidate identified

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 and successful scenario of leptogenesis emerges.