Neutrino Dark Matter in the Higgs Triplet Model

TL;DR

This paper investigates how adding vector-like leptons to the Higgs Triplet Model can produce a viable neutrino dark matter candidate, consistent with relic density and detection constraints.

Contribution

It introduces a novel extension of the Higgs Triplet Model with vector-like leptons, analyzing its dark matter phenomenology and experimental constraints.

Findings

The model's parameter space can satisfy dark matter relic density constraints.

Predicted neutrino and muon fluxes are consistent with current detection limits.

Identified viable dark matter mass regions within the model.

Abstract

We analyze the effects of introducing vector-like leptons in the Higgs Triplet Model providing the lightest vector-like neutrino as a Dark Matter candidate. We explore the effect of the relic density constraint on the mass and Yukawa coupling of dark matter, as well as calculate the cross sections for indirect and direct dark matter detection. We show our model predictions for the neutrino and muon fluxes from the Sun, and the restrictions they impose on the parameter space. We show that this model, with a restricted parameter space, is completely consistent with dark matter constraints, and indicate the resulting mass region for the dark matter.