Prompt polarized $J/\psi$ production at NICA within NRQCD and generalized parton model

A. V. Karpishkov   ; V. A. Saleev   ; K. K. Shilyaev

Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, Tome 30 (2024) no. 1, pp. 96-111

Résumé

In our work we consider prompt $J/\psi$ and $\psi'$ production within the approaches of nonrelativistic quantum chromodynamics and generalized parton model. We use various experimental data ($\sqrt{s} = 200$ GeV and $\sqrt{s} = 19.4$ GeV) of charmonium production to fit octet nonperturbative matrix elements and averaged values of initial partons' transverse momenta. Further, we make evaluation with the extracted parameters and predict $J/\psi$ production cross section and polarization of $J/\psi$ and $\psi'$ at NICA collider energy $\sqrt{s}=27$ GeV.

Détail

Keywords: high energy physics, quantum chromodynamics, spin, polarization, nonrelativistic quantum chromodynamics, collinear parton model, generalized parton model, SPD NICA.
Mots-clés : charmoium

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