Threshold expansion of the ggqq -> QQ X cross section at Oalpha s^4 - High Energy Physics - PhenomenologyReportar como inadecuado




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Abstract: We derive the complete set of velocity-enhanced terms in the expansion of thetotal cross section for heavy-quark pair production in hadronic collisions atnext-to-next-to-leading order. Our expression takes into account the effects ofsoft-gluon emission as well as that of potential-gluon exchanges. We prove thatthere are no enhancements due to subleading soft-gluon couplings multiplyingthe leading Coulomb singularity.



Autor: M. Beneke, M. Czakon, P. Falgari, A. Mitov, C. Schwinn

Fuente: https://arxiv.org/







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