Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-11-26
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 2 figures
Scientific paper
We derive the complete set of velocity-enhanced terms in the expansion of the total cross section for heavy-quark pair production in hadronic collisions at next-to-next-to-leading order. Our expression takes into account the effects of soft-gluon emission as well as that of potential-gluon exchanges. We prove that there are no enhancements due to subleading soft-gluon couplings multiplying the leading Coulomb singularity.
Beneke Martin
Czakon Michael
Falgari Pietro
Mitov Alexander
Schwinn Christian
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