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arXiv · 0806.2301

Two-Loop Fermionic Corrections to Heavy-Quark Pair Production: the Quark-Antiquark Channel

R. Bonciani·A. Ferroglia·T. Gehrmann·D. Maitre·C. Studerus
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Abstract

We evaluate the fermionic two-loop QCD corrections to the heavy-quark pair production process in the quark-antiquark channel. We obtain analytic results which are valid for any value of the Mandelstam invariants s and t, and of the heavy quark mass m. Our findings confirm previous results for the analytic evaluation in the small-mass limit and numerical results for the exact amplitude. We furthermore provide the expansion of the two-loop amplitude at the production threshold s ~ 4m^2.

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R. Bonciani, A. Ferroglia, T. Gehrmann, D. Maitre, C. Studerus. 2008-06-13. Two-Loop Fermionic Corrections to Heavy-Quark Pair Production: the Quark-Antiquark Channel. https://doi.org/10.1088/1126-6708%2F2008%2F07%2F129

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