Type-III Scotogenic Model: Inflation, Dark Matter and Collider Phenomenology

TL;DR

This paper extends the Type-III scotogenic model by adding a scalar that acts as the inflaton, linking inflation, dark matter, and collider signals within a unified framework.

Contribution

It introduces a real singlet scalar as the inflaton with non-minimal coupling, connecting inflationary dynamics with dark matter candidates and collider phenomenology.

Findings

The scalar inflaton can successfully drive inflation with observable consequences.

The inert scalar doublet and fermion triplet can account for dark matter relic abundance.

Potential collider signals are identified for future experiments.

Abstract

We investigate an extension of the Type-III scotogenic model by incorporating a real singlet scalar. This scalar plays a crucial role as the inflaton due to its non-minimal coupling with the Ricci scalar. The inflaton field subsequently decays into other particles within the Type-III scotogenic framework. In this framework, the inert scalar doublet and fermion triplet are crucial for neutrino mass generation and present strong candidates for 25\% energy budget or dark matter in the Universe. We study their relic abundance and potential for direct detection. Furthermore, we discuss possible observational signals that could be identified in future collider experiments.