QCD Evolution of Transversity in Leading and Next-to-Leading Order
Abstract
Description
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.
21 pages, 11 figures, presented at the Advanced Study Institute on Symmetries and Spin (Prague, 14-27 July 2002)
21 pages, 11 figures, presented at the Advanced Study Institute on Symmetries and Spin (Prague, 14-27 July 2002)