Slepton pair production in association with a jet: NLO-QCD corrections and parton-shower effects

TL;DR

This paper calculates NLO-QCD corrections for slepton pair production with a jet at the LHC, implements them in a simulation framework, and analyzes their impact on observable distributions and monojet analyses.

Contribution

It provides the first NLO-QCD corrections for slepton pair production with a jet, integrated into the POWHEG BOX, and studies the effects of parton-shower modeling on relevant observables.

Findings

NLO-QCD corrections significantly affect distribution shapes.

Parton shower modifies observables sensitive to QCD radiation.

Precise predictions enable improved monojet analysis strategies.

Abstract

We present a calculation of the next-to-leading order QCD corrections to slepton pair production in association with a jet at the LHC together with their implementation in the POWHEG BOX. For the simulation of parton-shower effects and the decays of the sleptons we employ the multi-purpose Monte-Carlo program PYTHIA. We discuss the impact of next-to-leading order QCD corrections on experimentally accessible distributions and illustrate how the parton shower can modify observables that are sensitive to QCD radiation effects. Having full control on the hard jet in the process, we provide precise predictions also for monojet analyses.