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On charmonia and charmed mesons photoproduction at high energy

V. A. Saleev·D. V. Vasin
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Abstract

We compare the predictions of the collinear parton model and the k_T-factorization approach in JΨand D^\star meson photoproduction at HERA energies. It is shown that obtained in the both approaches D^\star meson spectra over p_T and ηas well as JΨmeson 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 $α(p_T) in the JΨphotoproduction.

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V. A. Saleev, D. V. Vasin. 2003-11-08. On charmonia and charmed mesons photoproduction at high energy. https://doi.org/10.1016/s0370-2693(02)02845-9

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