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

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

2008-06-13

arxiv.org/abs/0806.2301v1

JHEP 0807:129,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 4 figures

Scientific paper

10.1088/1126-6708/2008/07/129

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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