Speaker
Description
Charmonia are a valuable tool to investigate nuclear matter under extreme conditions, and particularly the strongly interacting medium formed in heavy-ion collisions. At the LHC energies, the regeneration process has been found to significantly impact the observed charmonium yields. In particular, the measurement of $\psi(2S)$ production relative to $J/\psi$ in Pb-Pb collisions has a strong discriminating power between different regeneration scenarios. Additionally, the study of quarkonium production in proton–proton (pp) collisions represents the reference for interpreting results obtained in Pb–Pb collisions and it is a key measurement to distinguish among the quarkonium production models in pp and p–Pb. In this contribution, preliminary findings on the double ratio of $\psi(2S)$ -to- $J/\psi$ between Pb-Pb and pp collisions and the inclusive $J/\psi$ yield in pp collisions at $\sqrt{s}$ = 13 TeV measured by the ALICE Collaboration will be presented and compared with existing model calculations.
| Category | Experiment |
|---|---|
| Collaboration | ALICE |
