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T: Fachverband Teilchenphysik

T 11: QCD (Theorie) II

T 11.3: Vortrag

Donnerstag, 31. März 2011, 17:15–17:30, 30.23: 10-1

Light gluino effects in thrust at NNLL order — •Simon Gritschacher, Andre Hoang, and Vicent Mateu — MPI for Physics, Munich, Germany

Recent progress in computations of event shape distributions have reduced uncertainties in the strong coupling from fits to available experimental data to the percent level. It is therefore reasonable to ask for possible effects of new physics.

We consider the effects of light gluinos in the thrust distribution at the NNLL order level in the framework of Soft-Collinear-Effective-Theory (SCET). This involves modifications of the standard QCD renormalization group evolution and the computation of additional corrections to the hard, jet and soft functions that appear in the SCET factorization theorem.