在非相对论 QCD 和广义粒子模型中产生极化 $${J/}\psi$ 介子

IF 0.3 4区物理与天体物理 Q4 PHYSICS, NUCLEAR Physics of Atomic Nuclei Pub Date : 2024-09-02 DOI:10.1134/S1063778824700406

A. V. Karpishkov, V. A. Saleev, K. K. Shilyaev

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摘要

Abstract The production of polarized $J/\psi$ mesons at the NICA (Nuclotron based Ion Collider fAcility) energy of $\sqrt{s}=27$ GeV is studied on the basis of the generalized parton model in the leading order of perturbative QCD.在非相对论QCD模型中描述了一个（c\bar{c}\）夸克对到一个（J/\psi\）介子的强子化。非微扰模型参数是在与能量为 $\sqrt{s}=19.4$ GeV (NA3)和 $\sqrt{s}=200$ GeV (PHENIX)时产生瞬时 $J/\psi$ 介子的现有实验数据进行比较的基础上确定的。

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Production of Polarized ${J/}\psi$ Mesons within Nonrelativistic QCD and Generalized Parton Model

The production of polarized $J/\psi$ mesons at the NICA (Nuclotron based Ion Collider fAcility) energy of $\sqrt{s}=27$ GeV is studied on the basis of the generalized parton model in the leading order of perturbative QCD. The hadronization of a $c\bar{c}$ quark pair to a $J/\psi$ meson is described within the model of nonrelativistic QCD. Nonperturbative model parameters are determined on the basis of a comparison with available experimental data on the production of prompt $J/\psi$ mesons at the energies of $\sqrt{s}=19.4$ GeV (NA3) and $\sqrt{s}=200$ GeV (PHENIX).

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来源期刊

Physics of Atomic Nuclei 物理-物理：核物理

CiteScore

0.60

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.