Hard exclusive meson production at next-to-leading order

Details Hard exclusive meson production at next-to-leading order Hard exclusive meson production at next-to-leading order

2001-05-04

arxiv.org/abs/hep-ph/0105046v2

Phys.Lett. B513 (2001) 349-360

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX, 3 figures

Scientific paper

10.1016/S0370-2693(01)00751-1

We evaluate perturbative next-to-leading order corrections to the hard exclusive leptoproduction of pi+ mesons on a transversely polarized proton target. A model dependent study shows that these corrections can be large. We analyze the scale dependence and explore the Brodsky-Lepage-Mackenzie scale setting procedure. Although the predictions for the cross section suffer from theoretical uncertainties, the transverse nucleon single spin asymmetry turns out to be a rather stable observable since higher order effects approximately cancel there.

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