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arXiv · hep-ph/0108179

Single transverse-spin asymmetry in Drell-Yan lepton angular distribution

Daniel Boer·Jianwei Qiu
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Abstract

We calculate a single transverse-spin asymmetry for the Drell-Yan lepton-pair's angular distribution in perturbative QCD. At leading order in the strong coupling constant, the asymmetry is expressed in terms of a twist-3 quark-gluon correlation function T_F^{(V)}(x_1,x_2). In our calculation, the same result was obtained in both light-cone and covariant gauge in QCD, while keeping explicit electromagnetic current conservation for the virtual photon that decays into the lepton pair. We also present a numerical estimate of the asymmetry and compare the result to an existing other prediction.

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Daniel Boer, Jianwei Qiu. 2001-08-22. Single transverse-spin asymmetry in Drell-Yan lepton angular distribution. https://doi.org/10.1103/physrevd.65.034008

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