Scale-Invariant Models with One-Loop Neutrino Mass and Dark Matter Candidates

TL;DR

This paper develops minimal scale-invariant models at the TeV scale that generate one-loop neutrino masses and include viable dark matter candidates, predicting new physics such as singlet scalars mixing with the Higgs.

Contribution

The paper introduces fifteen new minimal scale-invariant models with one-loop neutrino mass generation and dark matter candidates, expanding the landscape of TeV-scale physics models.

Findings

Fifteen independent models with viable dark matter candidates.

Neutrino masses arise from a single one-loop topology.

Models predict new TeV-scale particles, including scalar mixing with the Higgs.

Abstract

We construct a list of minimal scale-invariant models at the TeV scale that generate one-loop neutrino mass and give viable dark matter candidates. The models generically contain a singlet scalar and a $Z_2$-odd sector comprised of singlet, doublet and/or triplet SU(2) multiplets. The dark matter may reside in a single multiplet or arise as an admixture of several multiplets. We find fifteen independent models, for which the dark matter is a viable candidate and neutrino mass results from a diagram with just one of the irreducible scale-invariant one-loop topologies. Further "non-pure" cases give hybrid one-/two-loop masses. All models predict new TeV scale physics, including a singlet scalar that generically mixes with the Higgs boson.