Double Transverse-Spin Asymmetries for Small-Q{sub T} Drell-Yan Pair Production in pp-bar Collisions

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215698· OSTI ID:21316962

Kawamura, Hiroyuki ^[1]; Tanaka, Kazuhiro ^[2]

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1. Department of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX (United Kingdom)
2. Department of Physics, Juntendo University, Inba, Chiba 270-1695 (Japan)

We discuss the double-spin asymmetries in transversely polarized Drell-Yan process, calculating all-order gluon resummation corrections up to the next-to-leading logarithmic accuracy. This resummation is relevant when the transverse-momentum Q{sub T} of the produced lepton pair is small, and reproduces the (fixed-order) next-to-leading QCD corrections upon integrating over Q{sub T}. The resummation corrections in pp-bar-collision behave differently compared with pp-collision cases, and are small at the kinematics in the proposed GSI experiments. This fact allows us to predict large value of the double-spin asymmetries at GSI, using recent empirical information on the transversity.

• OSTI ID: 21316962
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: 18. international spin physics symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215698; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
COLLIDING BEAMS
CORRECTIONS
DRELL MODEL
ELECTRON PAIRS
GLUONS
LEPTONS
PAIR PRODUCTION
POLARIZED BEAMS
PROTON-ANTIPROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
SPIN
T QUARKS
TRANSVERSE MOMENTUM