Single Transverse-Spin Asymmetry in Drell-Yan Production at Large and Moderate Transverse Momentum

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dc.creatorJi, Xiangdong
dc.creatorQiu, Jianwei
dc.creatorVogelsang, Werner
dc.creatorYuan, Feng
dc.date2006-04-04
dc.date.accessioned2026-07-07T10:44:58Z
dc.date.available2026-07-07T10:44:58Z
dc.descriptionWe study the single-transverse spin asymmetry for the Drell-Yan process. We consider production of the lepton pair at large transverse momentum, $q_\perp\sim Q$, where $Q$ is the pair's mass. The spin asymmetry is then of higher twist and may be generated by twist-three quark-gluon correlation functions. Expanding the result for $q_\perp\ll Q$, we make contact with the transverse-momentum-dependent QCD factorization involving the so-called Sivers functions. We find that the two mechanisms, quark-gluon correlations on one hand and the Sivers effect on the other, contain the same physics in this region. This ties the two together and imposes an important constraint on phenomenological studies of single transverse spin asymmetries.
dc.description29 pages, 10 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0604023
dc.identifierhttp://arxiv.org/abs/hep-ph/0604023
dc.identifierPhys.Rev.D73:094017,2006
dc.identifierdoi:10.1103/PhysRevD.73.094017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182779
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSingle Transverse-Spin Asymmetry in Drell-Yan Production at Large and Moderate Transverse Momentum
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