Exponentiation of the Drell-Yan cross section near partonic threshold in the DIS and MSbar schemes

Details Exponentiation of the Drell-Yan cross section near partonic threshold in the DIS and MSbar schemes Exponentiation of the Drell-Yan cross section near partonic threshold in the DIS and MSbar schemes

2003-05-16

arxiv.org/abs/hep-ph/0305179v1

JHEP0306:057,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, JHEP style, no figures

Scientific paper

10.1088/1126-6708/2003/06/057

It has been observed that in the DIS scheme the refactorization of the Drell-Yan cross section leading to exponentiation of threshold logarithms can also be used to organize a class of constant terms, most of which arise from the ratio of the timelike Sudakov form factor to its spacelike counterpart. We extend this exponentiation to include all constant terms, and demonstrate how a similar organization may be achieved in the MSbar scheme. We study the relevance of these exponentiations in a two-loop analysis.

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