Dark Radiative Inverse Seesaw Mechanism

TL;DR

This paper introduces a minimal, gauge-singlet model that explains neutrino masses, dark matter, and a strong electroweak phase transition, enabling electroweak baryogenesis within a unified framework.

Contribution

It proposes a novel radiative inverse seesaw mechanism involving dark matter and scalar fields, linking neutrino mass generation with dark matter phenomenology and baryogenesis.

Findings

Neutrino masses generated via loop-induced inverse seesaw.

Viable dark matter candidate testable in direct detection experiments.

Model supports a strong electroweak phase transition for baryogenesis.

Abstract

We present a minimal model that simultaneously accounts for neutrino masses and the origin of dark matter (DM) and where the electroweak phase transition is strong enough to allow for electroweak baryogenesis. The Standard Model is enlarged with a Majorana fermion, three generations of chiral fermion pairs, and a single complex scalar that plays a central role in DM production and phenomenology, neutrino masses, and the strength of the phase transition. All the new fields are singlets under the SM gauge group. Neutrino masses are generated via a new variant of radiative inverse seesaw where the required small mass term is generated via loops involving DM and no large hierarchy is assumed among the mass scales. The model offers all the advantage of low-scale neutrino mass models as well as a viable dark matter candidate that is testable with direct detection experiments.