Automized Squark-Neutralino Production to Next-to-Leading Order

TL;DR

This paper presents a next-to-leading order calculation for squark-neutralino production with a jet at the LHC, improving accuracy and reducing theoretical uncertainties in searches for supersymmetry.

Contribution

It introduces the first fully automated NLO calculation for squark-neutralino production using the MadGolem package, enhancing precision in supersymmetry searches.

Findings

Moderate corrections to production rate at NLO.

Significantly reduced theoretical uncertainties.

First application of automated NLO calculations for this process.

Abstract

The production of one hard jet in association with missing transverse energy is a major LHC search channel motivated by many scenarios for physics beyond the Standard Model. In scenarios with a weakly interacting dark matter candidate, like supersymmetry, it arises from the associated production of a quark partner with the dark matter agent. We present the next-to-leading order cross section calculation as the first application of the fully automized MadGolem package. We find moderate corrections to the production rate with a strongly reduced theory uncertainty.