Exclusive vector meson electroproduction
Abstract
We discuss exclusive vector meson electroproduction within the QCD collinear factorization framework. In Bjorken kinematics the amplitude factorizes in a convolution of the nonperturbative meson distribution amplitude and the generalized parton densities with the perturbatively calculable hard-scattering amplitudes, which are presently known to next-to-leading order (NLO). At small NLO corrections are very large. It is related to appearance of BFKL type logarithms in the hard-scattering amplitudes, that calls for a resummation of these effects at higher orders. Here we report the first results of such resummation.
Cite
@article{arxiv.0712.3193,
title = {Exclusive vector meson electroproduction},
author = {D. Yu. Ivanov},
journal= {arXiv preprint arXiv:0712.3193},
year = {2007}
}
Comments
7 pages; Talk given at 12th International Conference on Elastic and Diffractive Scattering: Forward Physics and QCD, Hamburg, DESY, Germany, 21-25 May 2007