Speaker
Description
Quarkonium production is a direct probe of deconfinement in heavy-ion collisions. For J/$\psi$, a bound state of $c\bar{c}$ quarks, the (re-)generation is found to be the dominant production mechanism at low transverse momentum ($p_{T}$) and in central collisions at the LHC energies.
In addition, the non-prompt component of J/$\psi$ production from b-hadron decays allows one to access the interaction of b-hadrons with the QGP down to low transverse momentum.
In this talk, the measurements of the J/$\psi$ nuclear modification factor $R_{AA}$, as a function of centrality and $p_{T}$ in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV will be shown. Prompt and non-prompt J/$\psi$ production measurements at midrapidity ($|y|$<0.9), as well as inclusive J/$\psi$ results at large rapidity (2.5 < $y$< 4 ), will be presented exploiting the whole data sample collected from Run 2. The prompt/non-prompt separation extends down to very low $p_{T}$ and its precision is improved significantly compared to the previous publications. Additionally, the measurements of inclusive, prompt and non-prompt J/$\psi$ in p-Pb collisions will be shown, and their consequences for the interpretation of nucleus-nucleus data will be discussed. All the results will be compared with model calculations.
| In-person participation | Yes |
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