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Prog. Theor. Phys. Vol. 115 No. 3 (2006) pp. 667-672

[ Full Text PDF : FREE ACCESS (134K) ]

Letters

The Dilepton QT Spectrum in Transversely Polarized Drell-Yan Process in QCD

Hiroyuki Kawamura,1 Jiro Kodaira,2 Hirotaka Shimizu3 and Kazuhiro Tanaka4

1Radiation Laboratory, RIKEN, Wako 351-0198, Japan
2Theory Division, KEK, Tsukuba 305-0801, Japan
3Department of Physics, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
4Department of Physics, Juntendo University, Inba, Chiba 270-1695, Japan

(Received December 11, 2005)

Abstract:

We discuss the transverse momentum QT distribution of Drell-Yan pair, produced in collisions of transversely polarized protons. We calculate the transversely polarized Drell-Yan cross section up to O (αs ) in the dimensional regularization, which gives QCD prediction at large QT. For small QT, we include all-orders resummation of large logarithms due to emission of soft gluons up to next-to-leading logarithmic accuracy. At intermediate QT, the resummation formula is matched with the fixed-order αs perturbative results in a systematic way, and we derive the cross section with uniform accuracy over the entire range of QT.


URL : http://ptp.ipap.jp/link?PTP/115/667/
DOI : 10.1143/PTP.115.667

[ Full Text PDF : FREE ACCESS (134K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 118 No. 4 (2007) pp. 581-656 :
    Transversely Polarized Drell-Yan Process and Soft Gluon Resummation in QCD
    Hiroyuki Kawamura, Jiro Kodaira and Kazuhiro Tanaka

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