Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 12: QCD (Theorie) 2

T 12.1: Vortrag

Mittwoch, 29. Februar 2012, 16:45–17:00, VG 3.103

Dipole-Subtraction Terms for QCD Amplitudes with Monte Carlo Helicities — •Christopher Schwan — Institut für Physik (THEP), Johannes Gutenberg-Universität Mainz, Germany

We show how to substitute polarization vectors and spinors having discrete helicities for ones with continuous helicity angles which are suitable for numerical QCD computations. Using these polarizations one can avoid the time-consuming summation over all 2ⁿ helicity configurations in QCD observables. To extend this method to NLO, one needs modified subtraction terms which are discussed in this talk.