Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-12-12
Prog.Theor.Phys. 115 (2006) 667-672
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages PTPTeX, 1 figure. Typos corrected and improvements made to the text
Scientific paper
10.1143/PTP.115.667
We discuss the transverse momentum Q_T distribution of Drell-Yan pair, produced in collisions of transversely polarized protons. We calculate the transversely polarized Drell-Yan cross section up to order \alpha_s in the dimensional regularization scheme, which gives QCD prediction at large Q_T. For small Q_T region, we include all-orders resummation of large logarithms due to emission of soft gluons up to next-to-leading logarithmic accuracy. At intermediate Q_T region, the resummation formula is matched with the fixed-order \alpha_s perturbative results in a systematic way, so that we derive the cross section with uniform accuracy over the entire range of Q_T.
Kawamura Hiroyuki
Kodaira Jiro
Shimizu Hirotaka
Tanaka Kazuhiro
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