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T: Fachverband Teilchenphysik

T 17: Beyond The Standard Model (Theorie) 1

T 17.1: Group Report

Wednesday, March 11, 2009, 16:45–17:05, M114

Production of Squarks and Gluinos at the LHC: The Electroweak Contributions — Jan Germer, Wolfgang Hollik, Edoardo Mirabella, and •Maike Trenkel — Max-Planck-Institut für Physik, 80335 München, Deutschland

If SUSY is realized, colored SUSY particles will be be produced copiously at the LHC. Pair production of squarks and gluinos is, therefore, among the most promising SUSY discovery channels. Besides the well-known supersymmetric QCD radiative corrections, also the electroweak contributions are required for a reliable cross section prediction. From SM processes it is known that especially in distributions on kinematical variables the electroweak effects can become important.

A short overview over the class of processes will be given. We investigate in detail the tree-level and next-to-leading order EW contributions to the cross sections. Special care has to be taken to obtain infrared finite observables. Numerical results will be presented for stop–anti-stop and squark-gluino production at the LHC.