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arXiv · 0807.3701

Automating dipole subtraction

K. Hasegawa·S. Moch·P. Uwer
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Abstract

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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K. Hasegawa, S. Moch, P. Uwer. 2008-07-23. Automating dipole subtraction. https://doi.org/10.1016/j.nuclphysbps.2008.09.115

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