Inclusive charmonium production at PANDA experiment

Details Inclusive charmonium production at PANDA experiment Inclusive charmonium production at PANDA experiment

2011-10-22

arxiv.org/abs/1110.4989v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 9 figures

Scientific paper

The production of the charmonium states in proton-antiproton experiments is considered at the energy rates near threshold in NLO. Such a consideration allows one to obtain non zero distributions over the transverse momentum of the final charmonium and gives a natural explanation to the existence of $\chi_{c1}$-meson in final state, that is observed experimentally and cannot be produced in leading order processes. The crucial role of scale parameter choice in $\alpha_s (Q^2)$ and partonic distributions $f(x,Q^2)$ shown, and the correct choice offered.

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