Threshold expansion of the ggqq -> QQ X cross section at Oalpha s^4 - High Energy Physics - PhenomenologyReport as inadecuate




Threshold expansion of the ggqq -> QQ X cross section at Oalpha s^4 - High Energy Physics - Phenomenology - Download this document for free, or read online. Document in PDF available to download.

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.



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

Source: https://arxiv.org/







Related documents