Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-10-03
Phys. Rev. C 85, 044918 (2012)
Physics
Nuclear Physics
Nuclear Theory
Scientific paper
10.1103/PhysRevC.85.044918
We study the effects of the equation of state on the nuclear suppression of heavy flavours in quark gluon plasma and estimate the initial entropy density of the system produced at the highest RHIC energy. For this purpose we have used the experimental data on the charged particle multiplicity and the nuclear suppression of single electron spectra originating from the semi-leptonic decays of open charm and beauty mesons. We have used inputs from lattice QCD to minimize the model dependence of the results. We obtain the value of the initial entropy density which varies from 20 to 59 /fm$^3$ depending on the value of the velocity of sound that one uses for the analysis. Our investigation leads to a conservative value of the initial entropy density $\sim 20/$fm$^3$ with corresponding initial temperature $\sim 210$ MeV well above the value of the transition temperature predicted by lattice QCD.
Alam Jan-e
Mazumder Surasree
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