Models with radiative neutrino masses and viable dark matter candidates

TL;DR

This paper catalogs 35 TeV-scale particle physics models that generate neutrino masses radiatively and include stable dark matter candidates, many of which are novel and testable at the LHC.

Contribution

It provides a comprehensive list of new models with specific particle content and conditions for viability, expanding the landscape of theories linking neutrino masses and dark matter.

Findings

Identified 35 viable models consistent with current data.

Most models are newly studied in the literature.

Half of the models predict particles with exotic electric charges.

Abstract

We provide a list of particle physics models at the TeV-scale that are compatible with neutrino masses and dark matter. In these models, the Standard Model particle content is extended with a small number (\leq 4) of scalar and fermion fields transforming as singlets, doublets or triplets under SU(2), and neutrino masses are generated radiatively via 1-loop diagrams. The dark matter candidates are stabilized by a Z_2 symmetry and are in general mixtures of the neutral components of such new multiplets. We describe the particle content of each of these models and determine the conditions under which they are consistent with current data. We find a total of 35 viable models, most of which have not been previously studied in the literature. There is a great potential to test these models at the LHC not only due to the TeV-scale masses of the new fields but also because about half of the viable models contain particles with exotic electric charges, which give rise to background-free signals. Our results should serve as a first step for detailed analysis of models that can simultaneously account for dark matter and neutrino masses.