Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-05-22
JHEP 0308 (2003) 007
Physics
High Energy Physics
High Energy Physics - Phenomenology
70 pages Latex; 38 figures included. Minor modifications to the text, units in figs. 7,8,10,11 corrected
Scientific paper
10.1088/1126-6708/2003/08/007
We apply the MC@NLO approach to the process of heavy flavour hadroproduction. MC@NLO is a method for matching next-to-leading order (NLO) QCD calculations and parton shower Monte Carlo (MC) simulations, with the following features: fully exclusive events are generated, with hadronisation according to the MC model; total rates are accurate to NLO; NLO results for distributions are recovered upon expansion in $\as$; hard emissions are treated as in NLO computations while soft/collinear emissions are handled by the MC simulation, with the same logarithmic accuracy as the MC; matching between the hard and soft regions is smooth, and no intermediate integration steps are necessary. The method was applied previously to the hadroproduction of gauge boson pairs, which at NLO involves only initial-state QCD radiation and a unique colour structure. In heavy flavour production, it is necessary to include contributions from final-state QCD radiation and different colour flows. We present illustrative results on top and bottom production at the Tevatron and LHC.
Frixione Stefano
Nason Paolo
Webber Bryan R.
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