Degrees of Freedom of the Quark Gluon Plasma, tested by Heavy Mesons

Abstract : Heavy quarks (charm and bottoms) are one of the few probes which are sensitive to the degrees of freedom of a Quark Gluon Plasma (QGP), which cannot be revealed by lattice gauge calculations in equilibrium. Due to the rapid expansion of the QGP energetic heavy quarks do not come to an equilibrium with the QGP. Their energy loss during the propagation through the QGP medium depends strongly on the modelling of the interaction of the heavy quarks with the QGP quarks and gluons, i.e. on the assuption of the degrees of freedom of the plasma. Here we compare the results of different models, the pQCD based Monte-Carlo (MC@sHQ), the Dynamical Quasi Particle Model (DQPM) and the effective mass approach, for the drag force in a thermalized QGP and discuss the sensitivity of heavy quark energy loss on the properties of the QGP as well as on non-equilibrium dynamics
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Contributor : Sylvie Flores <>
Submitted on : Wednesday, May 18, 2016 - 3:50:15 PM
Last modification on : Wednesday, February 13, 2019 - 11:28:02 AM

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  • HAL Id : in2p3-01317597, version 1
  • ARXIV : 1604.02343

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H. Berrehrah, M. Nahrgang, T. Song, V. Ozvenchuck, Pol-Bernard Gossiaux, et al.. Degrees of Freedom of the Quark Gluon Plasma, tested by Heavy Mesons. International Symposium on New Horizons in Fundamental Physics : From Neutrons Nuclei via Superheavy Elements and Supercritical Fields to Neutron Stars and Cosmic Rays, Nov 2015, Makutsi, South Africa. ⟨in2p3-01317597⟩

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