Transversity K Factors for Drell-Yan

Abstract

The question of the K factor in transversely polarised Drell-Yan (DY) processes is examined. The transverse-spin case is peculiar for the absence of a reference point in deeply inelastic scattering (DIS). Therefore, in order to study more fully the possible effects of higher-order corrections on DY asymmetries, a DIS definition for transversity is devised using a hypothetical scalar (Higgs-like) vertex. The results show that some care may be required in interpreting experimentally extracted partonic transversity, in particular when comparing with model calculations or predictions.

arXiv comment8 pages, 4 figures (eps and feynmp); uses standard LaTeX/MiKTeX packages [svjour.cls, amsmath, bbm, feynmp, graphicx, maybemath, natbib, psfrag, slashed] some homespun packages (included in the zip file); discussion augmented, 1 figure removed; resubmitted to Eur. Phys. J. section C

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Cited by in corpus (7)

• Sivers effect in Drell Yan at RHIC
• Dilepton production near partonic threshold in transversely polarized proton-antiproton collisions
• Double Transverse-Spin Asymmetries in Drell-Yan Processes with Antiprotons
• Next-to-leading order QCD corrections to single-inclusive hadron production in transversely polarized p-p and pbar-p collisions
• Single-inclusive hadron production in transversely polarized p-p and pbar-p collisions with threshold resummation
• QCD physics with polarized antiprotons at GSI
• SPIN Physics at GSI