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Two-loop fermionic corrections to heavy-quark pair production: the quark-antiquark channel


Bonciani, R; Ferroglia, A; Gehrmann, T; Maître, D; Studerus, C (2008). Two-loop fermionic corrections to heavy-quark pair production: the quark-antiquark channel. Journal of High Energy Physics, (07):129.

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 gtrsim 4m2.

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 gtrsim 4m2.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Uncontrolled Keywords:NLO Computations; QCD; Hadronic Colliders
Language:English
Date:July 2008
Deposited On:17 Feb 2009 14:35
Last Modified:18 Feb 2018 10:51
Publisher:Institute of Physics Publishing
ISSN:1029-8479
OA Status:Gold
Publisher DOI:https://doi.org/10.1088/1126-6708/2008/07/129
Related URLs:http://arxiv.org/abs/0806.2301

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