Fluid dynamics of charm quarks in the quark-gluon plasma

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, this description uses a heavy-quark diffusion constant which we take from lattice QCD calculations. The results describe the experimental data measured at the LHC at the center-of-mass energy of √𝑠NN=5.02  TeV up to 𝑝T∼4–5  GeV/𝑐, showing that charm quarks undergo a very fast hydrodynamization in the medium created by ultrarelativistic heavy-ion collisions.

F. Capellino, A. Dubla, S. Floerchinger, E. Grossi, A. Kirchner, S. Masciocchi, „Fluid dynamics
of charm quarks in the quark-gluon plasma“, Phys. Rev. D 108, 116011 (2023).

https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.116011

Related to Project A02