Speaker
Description
Quarkonium suppression has long been regarded as a potential probe of
deconfinement in nucleus-nucleus collisions. Recently, the production of 𝐽/𝜓 via regeneration within the QGP or at the phase boundary has been identified as an important ingredient for the interpretation of quarkonium production results from lead-lead collisions at the Large Hadron Collider (LHC). Moreover, the study of the excited states, as 𝜓(2𝑆), could help in distinguishing between recombination models.
On the other hand, quarkonium polarization could represent a valuable tool to investigate the properties of the QGP. In fact, beyond the known suppression and regeneration mechanisms, quarkonium can be polarized by the strong magnetic field, generated in the early stages of the collision, and by the angular momentum of the medium in non-central heavy-ion collisions.
In this contribution, the latest quarkonium results in Pb-Pb collisions from ALICE will be presented and discussed. These include, among others, the nuclear modifications of (inclusive, prompt and non-prompt) 𝐽/𝜓 and 𝜓(2𝑆) production, as well as the 𝐽/𝜓 polarization. The results will be compared with available theoretical model calculations.
| Topic | Heavy Ion Physics |
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