On charmonia and charmed mesons photoproduction at high energy

Details On charmonia and charmed mesons photoproduction at high energy On charmonia and charmed mesons photoproduction at high energy

2002-09-19

arxiv.org/abs/hep-ph/0209220v2

Phys.Lett. B548 (2002) 161-174

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk was presented at International Seminar "Heavy quark - 2002", JINR, Dubna, Russia, May-June, 2002. In version 2 we have co

Scientific paper

10.1016/S0370-2693(02)02845-9

We compare the predictions of the collinear parton model and the k_T-factorization approach in J\Psi and D^\star meson photoproduction at HERA energies. It is shown that obtained in the both approaches D^\star meson spectra over p_T and \eta as well as J\Psi meson p_T- and z-spectra are very different. The predictions obtained in the k_T-factorization approach are agree with the experimental data well. We also predict the nontrivial p_T-dependence of the the spin parameter $\alpha(p_T) in the J\Psi photoproduction.

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