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T: Fachverband Teilchenphysik

T 14: QCD (Theorie)

T 14.8: Vortrag

Montag, 9. März 2015, 15:45–16:00, K.12.23 (K1)

Factorization of infrared divergences in FDH and DRED — •Christoph Gnendiger — IKTP, TU Dresden

In this talk I will discuss the generalization of infrared factorization formulas to different variants of dimensional regularization, including the four-dimensional helicity scheme (FDH) and dimensional reduction (DRED). Special attention will be paid to the introduction of є-scalars, the RGE running of their different couplings, and to the UV renormalization of the effective coupling to the Higgs-boson. Besides results for the cusp anomalous dimension and the anomalous dimensions of quarks, gluons and є-scalars at NNLO, I will present two-loop transition rules for converting results from one regularization scheme to another.