Journal
NUCLEAR PHYSICS A
Volume 859, Issue 1, Pages 114-125Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2011.05.001
Keywords
Quark-gluon plasma; Charmonia; Ultrarelativistic heavy-ion collisions
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Funding
- US National Science Foundation [PHY-0969394]
- A.-v.-Humboldt foundation
- US Department of Energy [DE-FG02-87ER40371]
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A previously constructed transport approach to calculate the evolution of quarkonium yields and spectra in heavy-ion collisions is applied to Ph-Pb (root s = 2.76 A TeV) collisions at the Large Hadron Collider (LHC). In this approach spectral properties of charmonia are constrained by Euclidean correlators from thermal lattice QCD and subsequently implemented into a Boltzmann equation accounting for both suppression and regeneration reactions. Based on a fair description of SPS and RHIC data, we provide predictions for the centrality dependence of J/psi yields at LHC. The main uncertainty is associated with the input charm cross section, in particular its hitherto unknown reduction due to shadowing in nuclear collisions. Incomplete charm-quark thermalization and non-equilibrium in charmonium chemistry entail a marked reduction of the regeneration yield compared to the statistical equilibrium limit. (C) 2011 Elsevier B.V. All rights reserved.
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