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

Céline Degrande (1) , Benjamin Fuks (2) , Valentin Hirschi (3) , J. Proudom (4) , Hua-Sheng Shao (5)

1 IPPP - Institute for Particle Physics Phenomenology [Durham]
2 LPTHE - Laboratoire de Physique Théorique et Hautes Energies
3 SLAC - SLAC National Accelerator Laboratory
4 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
5 CERN [Genève]

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.

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

Céline Degrande, Benjamin Fuks, Valentin Hirschi, J. Proudom, Hua-Sheng Shao. Matching next-to-leading order predictions to parton showers in supersymmetric QCD. Physics Letters B, 2016, 755, pp.82-87. ⟨10.1016/j.physletb.2016.01.067⟩. ⟨hal-01272072⟩