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- W4283814306 abstract "The evaluation of quarkonium regeneration in ultrarelativistic heavy-ion collisions (URHICs) requires the knowledge of the heavy-quark phase space distributions in the expanding quark-gluon plasma (QGP) fireball. We employ a semi-classical charmonium transport approach where regeneration processes explicitly account for the time-dependent spectra of charm quarks via Langevin simulations of their diffusion. The inelastic charmonium rates and charm-quark transport coefficients are computed from the same charm-medium interaction. The latter is modeled by perturbative rates, augmented with a $K$-factor to represent nonperturbative interaction strength and interference effect. Using central 5.02~TeV Pb-Pb collisions as a test case we find that a good description of the measured $J/psi$ yield and its transverse-momentum dependence can be achieved if a large $Kgtrsim5$ is employed while smaller values lead to marked discrepancies. This is in line with open-charm phenomenology in URHICs, where nonperturbative interactions of similar strength are required. Our approach establishes a common transport framework for a microscopic description of open and hidden heavy-flavor (HF) observables that incorporates both nonperturbative and non-equilibrium effects, and thus enhances the mutual constraints from experiment on the extraction of transport properties of the QGP." @default.
- W4283814306 created "2022-07-06" @default.
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- W4283814306 date "2022-11-01" @default.
- W4283814306 modified "2023-10-18" @default.
- W4283814306 title "Non-equilibrium charmonium regeneration in strongly coupled quark-gluon plasma" @default.
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- W4283814306 doi "https://doi.org/10.1016/j.physletb.2022.137414" @default.
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