QCD Evolution of Transversity in Leading and Next-to-Leading Order

Details QCD Evolution of Transversity in Leading and Next-to-Leading Order QCD Evolution of Transversity in Leading and Next-to-Leading Order

2002-11-14

arxiv.org/abs/hep-ph/0211222v1

Czech.J.Phys.53:B27-B46,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 11 figures, presented at the Advanced Study Institute on Symmetries and Spin (Prague, 14-27 July 2002)

Scientific paper

I shall present a rather pedagogical discussion of the transversity distributions in the quark-parton model and, in particular, the role of perturbative QCD corrections. Among the topics I shall discuss are: LO and NLO evolution, the Soffer bound and so-called K factors in the Drell-Yan process. The main conclusion will be that, compared to unpolarised or even longitudinally polarised hadron scattering, the case of transverse spin should actually provide a far clearer window onto the workings of QCD and the interplay with the quark-parton model.

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