Inclusive charmonium production at PANDA experiment

Abstract

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.

19 pages, 9 figures

References in corpus (6)

• Exclusive Double-Charmonium Production from e^+ e^- Annihilation into a Virtual Photon
• Parton distributions from deep-inelastic-scattering data
• Charmonium Production at High Energy in the k_T-Factorization Approach
• Towards a solution of the charmonium production controversy: k_t-factorization versus color octet mechanism
• Helicity Amplitudes for Charmonium Production in Hadron-Hadron and Photon-Hadron Collisions
• Hadroproduction of the Chi1 and Chi2 States of Charmonium in 800 GeV/c Proton-Silicon Interactions

Cited by in corpus (3)

• Production of ${\chi }_b$-mesons at LHC
• The inclusive production of charged pion pairs in proton-antiproton collisions
• Direct ${\rho }_L$ meson production in proton-proton and proton-antiproton collisions