Vector meson electroproduction at next-to-leading order
D. Yu. Ivanov, L. Szymanowski*, G. Krasnikov
Sobolev Institute of Mathematics RAS, 630090 Novosibirsk, Russia *Soltan Institute for Nuclear Studies, 00-681 Warsaw, Poland and LPT, Université Paris-Sud, 91405 Orsay, France Department of Theoretical Physics, St.Petersburg State University, 198904 St.Petersburg, Russia
PACS: 12.38.Bx, 13.60.Le
Abstract
The process of a light neutral vector meson electroproduction is
studied in the framework of QCD factorization in which the amplitude
factorizes in a convolution of the nonperturbative meson distribution
amplitude and the generalized parton densities with the perturbatively
calculable hard-scattering amplitudes. We derive a complete set of
hard-scattering amplitudes at next-to-leading order (NLO) for the production
of vector mesons, V=ρ0, ω, φ.
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