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arXiv · 2404.09881

Charmonium Transport in Ultra-Relativistic Heavy-Ion Collisions at the LHC

Biaogang Wu·Ralf Rapp
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Abstract

We provide an update on our semi-classical transport approach for quarkonium production in high-energy heavy-ion collisions, focusing on $J/\psi$ and $\psi(2S)$ mesons in 5.02 TeV Pb-Pb collisions at the Large Hadron Collider (LHC) at both forward and mid-rapidity. In particular, we employ the most recent charm-production cross sections reported in pp collisions, which are pivotal for the magnitude of the regeneration contribution, and their modifications due to cold-nuclear-matter (CNM) effects. Multi-differential observables are calculated in terms of nuclear modification factors as a function of centrality, transverse momentum, and rapidity, including the contributions from bottom-decay feeddown. For our predictions for $\psi(2S)$ production, the mechanism of sequential regeneration relative to the more strongly bound $J/\psi$ meson plays an important role in interpreting recent ALICE data.

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Biaogang Wu, Ralf Rapp. 2024-04-15. Charmonium Transport in Ultra-Relativistic Heavy-Ion Collisions at the LHC. https://doi.org/10.3390/universe10060244

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