Automating dipole subtraction

Details Automating dipole subtraction Automating dipole subtraction

2008-07-23

arxiv.org/abs/0807.3701v1

Nucl.Phys.Proc.Suppl.183:268-273,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 6 pages, 1 figure. To appear in the proceedings of `Loops and Legs in Quantum Field Theory', April 2008, Sondershausen,

Scientific paper

10.1016/j.nuclphysbps.2008.09.11

We report on automating the Catani-Seymour dipole subtraction which is a general procedure to treat infrared divergences in real emission processes at next-to-leading order in QCD. The automatization rests on three essential steps: the creation of the dipole terms, the calculation of the color linked squared Born matrix elements, and the evaluation of different helicity amplitudes. The routines have been tested for a number of complex processes, such as the real emission process gg --> t anti-t ggg.

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