SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 17: Heavy-Ion Collisions and QCD Phases IV

HK 17.1: Gruppenbericht

Dienstag, 21. März 2023, 17:00–17:30, SCH/A315

Hydrodynamic modeling of J/ψ p_T spectra and anisotropic flow in the Statistical Hadronization Model — Anton Andronic³, Peter Braun-Munzinger^1,2, •Hjalmar Brunßen¹, Jana Crkovská¹, Johanna Stachel¹, and Martin Völkl¹ — ¹Physikalisches Institut, Universität Heidelberg — ²ExtreMe Matter Institute EMMI, GSI — ³Institut für Kernphysik, WWU Münster

The Statistical Hadronization Model (SHM) has been shown to describe the observed particle yields in heavy-ion collisions very successfully. This is true not only for hadrons consisting of light-flavor valence quarks, but also for those containing charm quarks with the corresponding enhancement when one incorporates in the SHM that charm quarks are produced in initial hard collisions.

In this talk, we present the calculation of the transverse momentum spectra and anisotropic flow coefficients of the J/ψ. The assumption underlying the statistical hadronization of charm quarks is that they thermalize in the medium. This is supported by experimental evidence that they participate in the collective expansion. In order to come from a yield predicted by the SHM to the p_T-dependent anisotropic flow coefficients and transverse momentum spectra, the evolution of the quark gluon plasma (QGP) needs to be modeled by a hydrodynamic simulation. For the QGP evolution and the freeze-out, results from three different viscous hydrodynamic models are presented: 2+1D and 3+1D MUSIC as well as FluiduM. The results of these three approaches are compared to recent ALICE data.