Gauged Inverse Seesaw from Dark Matter

TL;DR

This paper introduces a unified model linking the inverse seesaw mechanism for neutrino masses with dark matter candidates, utilizing a $U(1)_{B-L}$ gauge symmetry and discrete symmetries, consistent with experimental constraints.

Contribution

It presents a minimal model that generates inverse seesaw neutrino masses and includes stable dark matter candidates from the dark sector, all within a $U(1)_{B-L}$ framework.

Findings

Successfully generates small active neutrino masses via inverse seesaw.

Provides two stable dark matter candidates compatible with experimental bounds.

Aligns with collider and direct detection constraints for TeV-scale dark sector.

Abstract

We propose an economical model addressing the generation of the Inverse Seesaw mechanism from the spontaneous breaking of a local $U(1)_{B-L}$, with the Majorana masses of the sterile neutrinos radiatively generated from the dark sector. The field content of the Standard Model is extended by neutral scalars and fermionic singlets, and the gauge group is extended with a $U(1)_{B-L}$ and a discrete $\mathbb{Z}_4$ symmetries. Besides dynamically generating the Inverse Seesaw and thus small masses to the active neutrinos, our model offers two possible dark matter candidates, one scalar and one fermionic, stable thanks to a remnant $\mathbb{Z}_2$ symmetry. Our model complies with bounds and constraints form dark matter direct detection, invisible Higgs decays and $Z'$ collider searches for masses of the dark sector at the TeV scale.