Ivanov, D. Yu and Schaefer, Andreas and Szymanowski, L. and Krasnikov, G. (2004) Exclusive photoproduction of a heavy vector meson in QCD. EUROPEAN PHYSICAL JOURNAL C, 34 (3). pp. 297-316. ISSN 1434-6044
Full text not available from this repository.Abstract
The process of exclusive heavy vector meson photoproduction, gamma(p) --> V-p, is studied in the framework of QCD factorization. The mass of the produced meson, V = Y or J/Psi, provides a hard scale for the process. We demonstrate that, in the heavy quark limit and at the one-loop order in perturbation theory, the amplitude factorizes in a convolution of a perturbatively calculable hard-scattering amplitude with the generalized parton densities and the non-relativistic QCD matrix element [O-1](V). We evaluate the hard-scattering amplitude at one-loop order and compare the data with theoretical predictions using an available model for generalized parton distributions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIFFRACTIVE J/PSI ELECTROPRODUCTION; GENERALIZED PARTON DISTRIBUTIONS; VIRTUAL COMPTON-SCATTERING; DEEP-INELASTIC-SCATTERING; HIGH-ENERGY FACTORIZATION; BFKL POMERON; POMERANCHUK SINGULARITY; ELASTIC PHOTOPRODUCTION; GLUON DISTRIBUTIONS; WAVE-FUNCTION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Jul 2021 09:53 |
| Last Modified: | 20 Jul 2021 09:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37682 |
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