Singlet fermion dark matter and electroweak baryogenesis with radiative neutrino mass

TL;DR

This paper extends a radiative neutrino mass model with a real singlet scalar, enabling singlet fermion dark matter and modifying the Higgs potential to support electroweak baryogenesis.

Contribution

It introduces a new scalar extension allowing the lightest singlet fermion to be dark matter and modifies the Higgs potential for baryogenesis.

Findings

Lightest neutral singlet fermion can serve as dark matter.

Modified Higgs potential supports electroweak baryogenesis.

Model remains consistent with neutrino mass generation.

Abstract

The model of radiative neutrino mass with dark matter proposed by one of us is extended to include a real singlet scalar field. There are then two important new consequences. One is the realistic possibility of having the lightest neutral singlet fermion (instead of the lightest neutral component of the dark scalar doublet) as the dark matter of the Universe. The other is a modification of the effective Higgs potential of the Standard Model, consistent with electroweak baryogenesis.