Dark Matter Direct Detection in $t$-channel mediator models

TL;DR

This paper analyzes the direct detection signals of singlet dark matter in t-channel models, providing detailed one-loop calculations and comparing results with experimental bounds and relic density constraints.

Contribution

It offers a complete one-loop effective field theory matching for scalar and fermionic dark matter in t-channel models, advancing the theoretical understanding of their detection prospects.

Findings

Loop-induced cross-sections are computed for scalar and fermionic dark matter.

Current experiments constrain parts of the parameter space.

Future experiments will further test these models.

Abstract

We perform a comprehensive study of the Direct Detection phenomenology of singlet Dark Matter $t$-channel portal models. For that purpose, we present a complete one-loop matching onto a Heavy Dark-Matter Effective Field Theory, leading to a complete computation of the loop induced direct detection cross-section for both scalar and fermionic Dark Matter candidates. The results are compared with current and future bounds from Direct Detection experiments, as well as with the requirement of the correct Dark Matter relic density.