Exclusive photoproduction of a heavy vector meson in QCD
作者： L. Szymanowski , G. Krasnikov , G. Krasnikov , A. Schäfer , D. Yu Ivanov
DOI: 10.1140/EPJC/S2004-01712-X
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摘要: The process of exclusive heavy vector meson photoproduction, \(\gamma p \to V p\), is studied in the framework QCD factorization. mass produced meson, \(V = \Upsilon\) or \(J/\Psi\), provides a hard scale for process. We demonstrate that, quark limit and at one-loop order perturbation theory, amplitude factorizes convolution perturbatively calculable hard-scattering with generalized parton densities non-relativistic matrix element \(\langle O_1\rangle_{V}\). evaluate compare data theoretical predictions using an available model distributions.
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