Two-loop QCD corrections to the vector form factors for the heavy-quark photo-production

Details Two-loop QCD corrections to the vector form factors for the heavy-quark photo-production Two-loop QCD corrections to the vector form factors for the heavy-quark photo-production

2004-10-06

arxiv.org/abs/hep-ph/0410092v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at the 11th International QCD Conference: QCD04, Montpellier, France, 5-10 July 2004; 4 pages, 4 figures

Scientific paper

We review on the calculation of the heavy-quark photo-production vector form factors, with the full dependence on the mass of the heavy-quark. The Feynman diagrams are evaluated within the dimensional regularization scheme and expressed in Laurent series of $\epsilon=(4-D)/2$, where $D$ is the space-time dimension. The coefficients of the expansion are expressed in terms of harmonic polylogarithms. The numerical evaluation of the analytical formulas and the threshold limit of our results are presented.

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