Susy-QCD corrections to neutralino pair production in association with a jet

TL;DR

This paper calculates next-to-leading order Susy-QCD corrections for neutralino pair production with a jet at the LHC, providing precise predictions for monojet plus missing energy signatures.

Contribution

It presents the first complete NLO Susy-QCD corrections including all non-resonant diagrams for this process, using automated computational tools.

Findings

Distributions based on missing transverse energy are provided.

Results are compatible with current experimental bounds.

The study enhances the accuracy of monojet signature predictions.

Abstract

We present the NLO Susy-QCD corrections to the production of a pair of the lightest neutralinos plus one jet at the LHC, appearing as a monojet signature in combination with missing energy. We fully include all non-resonant diagrams, i.e. we do not assume that production and decay factorise. We derive a parameter point based on the p19MSSM which is compatible with current experimental bounds and show distributions based on missing transverse energy and jet observables. Our results are produced with the program GOSAM for automated one-loop calculations in combination with MadDipole/MadGraph for the real radiation part.