Constraining Inert Triplet Dark Matter by the LHC and FermiLAT

TL;DR

This paper explores how collider and astrophysical data constrain inert triplet scalar dark matter models, focusing on Higgs decay channels and gamma-ray signals, with implications for future experiments.

Contribution

It provides a comprehensive analysis combining collider and FermiLAT data to constrain inert triplet dark matter, including new calculations of annihilation cross sections.

Findings

FermiLAT constraints can surpass LUX for low-mass dark matter.

Higgs invisible decay limits restrict dark matter parameter space.

Predictions for mono-Higgs production offer future detection prospects.

Abstract

We study collider phenomenology of inert triplet scalar dark matter at the LHC. We discuss possible decay of Higgs boson to dark matter candidate and apply current experimental data for invisible Higgs decay and $R_{\gamma\gamma}$ to constrain parameter space of our model. We also investigate constraints on dark matter coming from forthcoming measurement, $R_{Z\gamma}$ and mono-Higgs production. We analytically calculate the annihilation cross section of dark matter candidate into $2\gamma$ and $Z\gamma$ and then use FermiLAT data to put constraints on parameter space of Inert Triplet Model. We found that this limit can be stronger than the constraints provided by LUX experiment for low mass DM.