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

Philip G. Ratcliffe
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Abstract

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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Philip G. Ratcliffe. 2002-11-14. QCD Evolution of Transversity in Leading and Next-to-Leading Order. https://arxiv.org/abs/hep-ph/0211222

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