A Class of Three-Loop Models with Neutrino Mass and Dark Matter

TL;DR

This paper explores a class of three-loop models that generate neutrino masses with dark matter playing a crucial role, identifying various models including Majorana and colored variants, and predicting inert scalar dark matter.

Contribution

It introduces new three-loop neutrino mass models with dark matter, expanding on previous proposals and including colored and inert scalar dark matter variants.

Findings

Identified models with Majorana dark matter

Included colored variants of the models

Predicted inert N-tuplet scalar dark matter

Abstract

We study a class of three-loop models for neutrino mass in which dark matter plays a key role in enabling the mass diagram. The simplest models in this class have Majorana dark matter and include the proposal of Krauss, Nasri and Trodden; we identify the remaining related models, including the viable colored variants. The next-to-simplest models use either more multiplets and/or a slight modification of the loop-diagram, and predict inert N-tuplet scalar dark matter.