One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up to O(epsilon^2)

Details One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up to O(epsilon^2) One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up to O(epsilon^2)

2005-11-22

arxiv.org/abs/hep-ph/0511264v2

Phys.Rev. D73 (2006) 034030

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 6 figures in the text, Revtex, one reference added, minor improvements in the text, to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.73.034030

We present complete analytical ${\mathcal O}(\epsilon^2)$ results on the one-loop amplitudes relevant for the NNLO quark-parton model description of the hadroproduction of heavy quarks as given by the so-called loop-by-loop contributions. All results of the perturbative calculation are given in the dimensional regularization scheme. These one-loop amplitudes can also be used as input in the determination of the corresponding NNLO cross sections for heavy flavor photoproduction, and in photon-photon reactions.

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