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VOLUME 80 | ISSUE 4 | PAGE 255
Vector meson electroproduction at next-to-leading order
D. Yu. Ivanov, L. Szymanowski*, G. Krasnikov^\dag
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
^\dagDepartment 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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