Q^2 Dependence of the azimuthal Asymmetry in Unpolarized Drell-Yan

Details Q^2 Dependence of the azimuthal Asymmetry in Unpolarized Drell-Yan Q^2 Dependence of the azimuthal Asymmetry in Unpolarized Drell-Yan

2004-07-19

arxiv.org/abs/hep-ph/0407208v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures. Presented at "HiX2004", Marseille, July 26-28, 2004

Scientific paper

10.1063/1.1871665

We study the azimuthal asymmetry of the unpolarized Drell-Yan in the framework of the T-odd functions. We find, on the basis of quite general arguments, that for |{\bf q}_{\perp}| << Q such an asymmetry decreases as Q^{-2}, where {\bf q}_{\perp} and Q are respectively the transverse momentum and the center-of-mass energy of the muon pair. The experimental results support this conclusion.

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