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T: Fachverband Teilchenphysik

T 13: QCD (Theorie) 3

T 13.1: Vortrag

Mittwoch, 6. März 2013, 16:45–17:00, WIL-A120

QCD factorization of infrared singularities in different forms of dimensional regularization — •Christoph Gnendiger — Institut für Kern- und Teilchenphysik, TU Dresden

In this work we analyze factorization properties of infrared singularities in massless QCD at two-loop order in different forms of dimensional regularization, including Conventional Dimensional Regularization (CDR) and Dimensional Reduction (DRED).

In CDR it is known that infrared singularities can be predicted by a general and compact formula. We show that in DRED the results are not in agreement with this formula, but with a modified one. We explain the origin of this modification and show how to convert CDR-results into DRED.