Associative production of $J/\psi$-mesons and direct photons at the energy of the NICA collider
Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, Tome 29 (2023) no. 2, pp. 48-61
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The article considers the associated production of $J/\psi$-mesons and direct photons at the energy of the NICA collider, $\sqrt s =27$ GeV, in the Generalized Parton Model in the leading order of perturbation theory of the quantum chromodynamics. Hadronization of a pair of $c\bar c$-quarks to a $J/\psi$-meson is described in terms of two approaches: the color singlet model and the color evaporation model. Nonperturbative parameters of the models are fixed from comparison with the available experimental data on inclusive production of $J/\psi$-mesons obtained at energies from $\sqrt s = 19$ up to $\sqrt s = 200$ GeV. It is shown that the processes of the associative production of $J/\psi + \gamma$ can be used to study of gluon distribution functions depending on the transverse momentum in a proton.
Keywords:
NICA, charmonium, $J/\psi$-meson, color singlet model, color evaporation model, hard process, generalized parton model, quantum chromodynamics.
@article{VSGU_2023_29_2_a4,
author = {L. E. Alimov and V. A. Saleev},
title = {Associative production of $J/\psi$-mesons and direct photons at the energy of the {NICA} collider},
journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
pages = {48--61},
publisher = {mathdoc},
volume = {29},
number = {2},
year = {2023},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/VSGU_2023_29_2_a4/}
}
TY - JOUR AU - L. E. Alimov AU - V. A. Saleev TI - Associative production of $J/\psi$-mesons and direct photons at the energy of the NICA collider JO - Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ PY - 2023 SP - 48 EP - 61 VL - 29 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VSGU_2023_29_2_a4/ LA - ru ID - VSGU_2023_29_2_a4 ER -
%0 Journal Article %A L. E. Alimov %A V. A. Saleev %T Associative production of $J/\psi$-mesons and direct photons at the energy of the NICA collider %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2023 %P 48-61 %V 29 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2023_29_2_a4/ %G ru %F VSGU_2023_29_2_a4
L. E. Alimov; V. A. Saleev. Associative production of $J/\psi$-mesons and direct photons at the energy of the NICA collider. Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ, Tome 29 (2023) no. 2, pp. 48-61. http://geodesic.mathdoc.fr/item/VSGU_2023_29_2_a4/