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T: Fachverband Teilchenphysik

T 17: Beyond the Standard Model (Theorie) I

T 17.10: Talk

Monday, March 15, 2010, 19:00–19:15, HG XIV

The strong coupling constant beyond the SUSY scale — Luminita Mihaila, •Jens Salomon, and Matthias Steinhauser — Institut für Theoretische Teilchenphysik, Karlsruhe, Deutschland

Given the value of the strong coupling constant at the electroweak scale, we determine its precise value beyond the SUSY scale in the framework of the Minimal Supersymmetric Standard Model (MSSM). Therefore, we evaluate its matching coefficient connecting the Standard Model and the MSSM at two-loop order considering contributions involving Yukawa couplings and the strong coupling constant. This allows for a consistent and phenomenologically viable evaluation of the strong gauge coupling at three-loop order up to high energy scales.