# Threshold Resummation for Dark-Matter Production at the LHC

## TL;DR

This paper presents high-precision theoretical predictions for dark-matter production with a mono-jet signature at the LHC, incorporating advanced resummation techniques to improve accuracy.

## Contribution

It introduces a novel combination of threshold resummation at NLL accuracy with NLO fixed-order calculations for dark-matter mono-jet production in a simplified model.

## Key findings

- Resummation improves prediction accuracy for mono-jet signals.
- Matched NLO+NLL results provide reliable cross sections.
- Numerical results for benchmark LHC scenarios are presented.

## Abstract

We derive precision predictions for the production of dark-matter particles recoiling against a jet with large transverse momentum at the LHC. The dark-matter fermions are described within a simplified model and couple to the Standard Model via a vector mediator. Our predictions for the mono-jet signature include the resummation of the leading and next-to-leading threshold logarithms. The corresponding matching coefficient is evaluated at NLO. The resummed result is matched to the fixed-order NLO cross section obtained from the MadGraph framework. We discuss numerical results for several benchmark scenarios at the LHC.