Constraining the equation of state with heavy quarks in the quasi-particle model of QCD matter

PHYSICS LETTERS B(2024)

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摘要
In a quasi-particle model of QCD matter at finite temperature with thermal masses for quarks and gluons from hard thermal loops, the equation of state (EOS) can be described by an effective temperature dependence of the strong coupling g(T). Assuming the same effective coupling between the exchanged gluon and thermal partons, the EOS can also be related to parton energy loss. Based on the quasi-particle linear Boltzman n transport (QLBT) model coupled to a (3+1)-dimensional viscous hydrodynamic model of the quark-gluon plasma (QGP) evolution and a hybrid fragmentation-coalescence model for heav y quark hadronization, we perform a Bayesian analysis of the experimental data on D meson suppression R-AA and anisotropy v(2) at RHIC and the LHC. We achieve a simultaneous constraint on the QGP EOS and the heav y quark transport coefficient, both consistent with the lattice QCD results.
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