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arXiv · 2307.14449

Fluid dynamics of charm quarks in the quark--gluon plasma

Federica Capellino·Andrea Dubla·Stefan Floerchinger·Eduardo Grossi·Andreas Kirchner·Silvia Masciocchi
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Abstract

A fluid-dynamic approach to charm-quark diffusion in the quark-gluon plasma (QGP) is developed for the first time. Results for integrated yields and momentum distributions of charmed hadrons obtained with a fluid-dynamic description for the dynamics of the QGP coupled to an additional heavy-quark-antiquark current are shown. In addition to the thermodynamic Equation of State (EoS), this description uses a heavy-quark diffusion constant which we take from Lattice QCD calculations. The results describe quantitatively experimental data measured at the LHC at the center-of-mass energy of $\sqrt{s_{\rm NN}}$ = 5.02 TeV up to $p_{\rm T}\sim$ 4-5 GeV/$c$, showing that charm quarks undergo a very fast hydrodynamization in the medium created by ultrarelativistic heavy-ion collisions.

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Federica Capellino, Andrea Dubla, Stefan Floerchinger, Eduardo Grossi, Andreas Kirchner, Silvia Masciocchi. 2023-07-26. Fluid dynamics of charm quarks in the quark--gluon plasma. https://doi.org/10.1103/physrevd.108.116011

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