Single spin asymmetries in the Drell-Yan process

Details Single spin asymmetries in the Drell-Yan process Single spin asymmetries in the Drell-Yan process

1997-10-29

arxiv.org/abs/hep-ph/9710525v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Latex, 4 Postscript figure, uses epsfig.sty. Invited talk presented at the workshop 'Deep inelastic scattering off p

Scientific paper

We discuss single transverse spin asymmetries in the Drell-Yan process originating from so-called gluonic poles in twist-three hadronic matrix elements, as first considered by Qiu and Sterman. Even though time-reversal invariance is not broken, the effects of such poles cannot be distinguished from those of time-reversal odd distribution functions. We show the connection between gluonic poles and large distance gluon fields, in particular we focus on boundary conditions. We identify the possible single spin asymmetries in the Drell-Yan process.

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