Consistency of WIMP Dark Matter as radiative neutrino mass messenger

TL;DR

This paper explores a singlet-triplet extension of the scotogenic model, addressing symmetry breaking issues and enhancing prospects for direct WIMP Dark Matter detection.

Contribution

It introduces a scalar triplet extension that stabilizes the model and improves dark matter detection prospects.

Findings

The extended model avoids spontaneous symmetry breaking issues.

Scalar triplets influence scalar sector coupling evolution.

Enhanced potential for direct WIMP detection.

Abstract

The scotogenic scenario provides an attractive approach to both Dark Matter and neutrino mass generation, in which the same symmetry that stabilises Dark Matter also ensures the radiative seesaw origin of neutrino mass. However the simplest scenario may suffer from inconsistencies arising from the spontaneous breaking of the underlying $\mathbb{Z}_2$ symmetry. Here we show that the singlet-triplet extension of the simplest model naturally avoids this problem due to the presence of scalar triplets neutral under the $\mathbb{Z}_2$ which affect the evolution of the couplings in the scalar sector. The scenario offers good prospects for direct WIMP Dark Matter detection through the nuclear recoil method.