Institute for Theoretical Particle Physics (TTP)

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preprints:2008:ttp08-29 [2016/03/17 11:03] (current)
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 +====== TTP08-29 Heavy-quark pair production at two loops in QCD ====== 
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 +   <hidden TTP08-29  Heavy-quark pair production at two loops in QCD > 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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 +|**S.Moch, P.Uwer**  |  
 +|**  Nucl.Phys.Proc.Suppl.   183 75-80 2008  **  | 
 +| {{preprints:2008:ttp08-29.pdf|PDF}} {{preprints:2008:ttp08-29.ps|PostScript}} [[http://arxiv.org/abs/0807.2794|arXiv]]   | 
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