Speaker
Description
Quarkonium production has long been identified as one of the golden probes to study the quark-gluon plasma (QGP). Among many observables, the measurement of azimuthal anisotropies in quarkonium production has a special role to shed light on the collective behavior of particles in a strongly interacting medium. In particular, the magnitude of the $\rm{J}/\psi$ elliptic flow measured at the LHC in Pb-Pb collisions is interpreted as a signature of the charm-quark thermalization in the QGP, supporting the scenario of charmonium (re)generation at low $p_{\rm T}$. Interestingly, the observation of collective-like effects in high-multiplicity pp and p-Pb collisions raises questions about the minimal conditions needed for QGP formation. In this contribution, measurements of quarkonium flow coefficients from small (pp) to large (Pb–Pb) collision systems carried out by the ALICE collaboration will be presented. New results on $\rm{J}/\psi$ $v_{2}$ in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.36 TeV using event-plane and scalar product methods as a function of $p_{\rm T}$ and rapidity will be discussed. In addition, multi-particle cumulant $\rm{J}/\psi$ $v_{2}${4} will be shown, allowing further insight into charm quark thermalization into the QGP and, for the first time, access to flow fluctuations.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE |
