Determination of equation of state of quark matter from $J/ψ$ and $Υ$ suppression at RHIC and LHC

Details Determination of equation of state of quark matter from $J/ψ$ and $Υ$ suppression at RHIC and LHC Determination of equation of state of quark matter from $J/ψ$ and $Υ$ suppression at RHIC and LHC

2000-02-29

arxiv.org/abs/hep-ph/0002298v2

Eur.Phys.J.C17:179-186,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages including 11 figures. (Submitted to Eur. Phys. Jour. C)

Scientific paper

10.1007/s100520000452

The long life-time of the quark-gluon plasma likely to be created in the relativistic heavy ion collisions at RHIC and LHC energies renders it sensitive to the details of the equation of state of the quark-matter. We show that the $p_T$ dependence of the survival probability of the directly produced $J/\psi$ at RHIC energies and that of the directly produced $\Upsilon$ at LHC energies is quite sensitive to the speed of sound in the quark matter, which relates the pressure and the energy density of the plasma. The transverse expansion of the plasma is shown to strongly affect the $J/\psi$ suppression at LHC energies.

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