Speaker
Description
In relativistic heavy-ion collisions, the production of J/$\psi$ serves as an important probe for studying the properties of quark-gluon plasma (QGP). However, interpreting the modi-fication of J/$\psi$ yields is challenging due to the interplay of hot, such as dissociation and regeneration, and cold nuclear matter effects. Measuring J/$\psi$ production across various collision systems and energies is therefore essential for gaining deeper insights into QGP properties.
In this talk, we will present the nuclear modification factor ($R_{AA}$) of J/$\psi$ as a function of centrality and transverse momentum in O+O collisions at $\sqrt{\mathrm{s_{NN}}}$ = 200 GeV, as well as in Au+Au collisions at $\sqrt{\mathrm{s_{NN}}}$ = 14.6, 17.3, 19.6, and 27 GeV. In particular, the O+O results can be used to explore small-system dynamics and provide a baseline for comparisons with larger systems, such as Au+Au or Pb+Pb collisions, thereby enriching our understanding of nuclear matter behavior across different scales. Furthermore, we examine the energy dependence of J/$\psi$ $R_{AA}$ in central heavy-ion collisions, spanning RHIC to LHC energies, and compare the results with theoretical model predictions.
