Issue |
EPJ Web Conf.
Volume 276, 2023
The 20th International Conference on Strangeness in Quark Matter (SQM 2022)
|
|
---|---|---|
Article Number | 02015 | |
Number of page(s) | 4 | |
Section | Heavy-flavor and Quarkoniades and Future Experiments | |
DOI | https://doi.org/10.1051/epjconf/202327602015 | |
Published online | 01 March 2023 |
https://doi.org/10.1051/epjconf/202327602015
Measurements of quarkonium production and polarization in Pb–Pb collisions with ALICE
State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
Published online: 1 March 2023
Quarkonia are excellent probes of deconfinement in heavy-ion collisions. For J/ψ, a bound state of cc¯ quarks, the (re-)generation is found to be the dominant production mechanism at the LHC energies. Production measurements of non-prompt J/ψ, originating from beauty-hadron decays, allow one to access the interaction of beauty-quarks with the quark-gluon plasma (QGP). Polarization and spin alignment measurements can be used to investigate the characteristics of the formed medium. Moreover, it has been hypothesized that quarkonium states can be polarized by the strong magnetic field generated in the initial state of the collision and by the large angular momentum of the medium in non-central heavy-ion collisions.
In these proceedings, the measurements of the inclusive, prompt, and non-prompt J/ψ nuclear modification factor RAA in Pb–Pb collisions at √SNN = 5.02 TeV are shown. The measured non-prompt J/ψ fraction extends down to very low pT with a significantly improved precision compared to previous publications. The results from the first publication on the J/ψ polarization with respect to the event-plane in Pb–Pb collisions at √SNN = 5.02 TeV at forward rapidity are presented as well. The results are compared with available calculations.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.