QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations

Details QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations

2010-11-30

arxiv.org/abs/1011.6647v1

JHEP 1103:027,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

45 pages, 17 figures

Scientific paper

10.1007/JHEP03(2011)027

We perform an analytic calculation of the one-loop amplitude for the W-boson mediated process 0 \to d u-bar Q Q-bar l-bar l, retaining the mass for the quark Q. The momentum of each of the massive quarks is expressed as the sum of two massless momenta and the corresponding heavy quark spinor is expressed as a sum of two massless spinors. Using a special choice for the heavy quark spinors we obtain analytic expressions for the one-loop amplitudes which are amenable to fast numerical evaluation. The full next-to-leading order (NLO) calculation of hadron+hadron \to W(\to e nu) b b-bar with massive b-quarks is included in the program MCFM. A comparison is performed with previous published work.

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