期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1088/1126-6708/2008/07/129
关键词
NLO computations; hadronic colliders; QCD
资金
- Science and Technology Facilities Council [ST/G000905/1] Funding Source: researchfish
- STFC [ST/G000905/1] Funding Source: UKRI
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 greater than or similar to 4m(2).
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