Matching next-to-leading order predictions to parton showers in supersymmetric QCD

Abstract

We present a fully automated framework based on the FeynRules and MadGraph5 aMC@NLO programs that allows for accurate simulations of supersymmetric QCD processes at the LHC. Starting directly from a model Lagrangian that features squark and gluino interactions, event generation is achieved at the next-to-leading order in QCD, matching short-distance events to parton showers and including the subsequent decay of the produced supersymmetric particles. As an application, we study the impact of higher-order corrections in gluino pair-production in a simplified benchmark scenario inspired by current gluino LHC searches.

Comments: 6 pages, 6 figures, 1 table. Version accepted by PLB. UFO model to be downloaded from https://feynrules.irmp.ucl.ac.be/wiki/NLOModels