Effects of equation of state on nuclear suppression and the initial entropy density of quark gluon plasma
Year: 2012
Type: article
Abstract: We study the effects of the equation of state on the nuclear suppression of heavy flavors in quark gluon plasma and estimate the initial entropy density of the system produced in Au + Au collision at the highest Relativistic Heavy Ion Collider (RHIC) energy. For this purpose the experimental data on the charged-particle multiplicity and the nuclear suppression of single-electron spectra originating from the semileptonic decays of open charm and beauty mesons have been employed. 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 of $\ensuremath{\sim}$20/fm${}^{3}$ with a corresponding initial temperature of $\ensuremath{\sim}$210 MeV, which is well above the value of the transition temperature predicted by lattice QCD.
Source: Physical Review C
Authors: Surasree Mazumder, Jan-e Alam
Institution: Variable Energy Cyclotron Centre
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2005227981