Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 11: QCD (Theorie) II

T 11.1: Vortrag

Dienstag, 16. März 2010, 16:45–17:00, HG XVI

Alternative dipole subtraction scheme using Nagy-Soper dipoles — •Cheng-Han Chung, Michael Krämer, and Tania Robens — Institut für Theoretische Physik E, RWTH Aachen, D - 52056 Aachen, Germany

We present an alternative subtraction scheme for the treatment of infrared divergences in NLO QCD calculations where the number of kinematic transformations is greatly reduced with respect to the standard scheme by Catani and Seymour. In our scheme, we define a different phase space matching in which the momentum mapping takes all the spectators into account at once when going from m + 1 to m particle phase space, instead of separately summing over all possible emitter/spectator pairs. We discuss the general framework setup of the scheme as well as some applications.