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Equilibration of the Gluon-Minijet Plasma at RHIC and LHC

Gouranga C. Nayak·Adrian Dumitru·Larry McLerran·Walter Greiner
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Abstract

We study the production and equilibration of the gluon-minijet plasma expected to be formed in the central region of ultrarelativistic heavy-ion collisions at the BNL-RHIC and the CERN-LHC by solving a self-consistent relativistic transport equation. We compute the minijet production within perturbative QCD. Subsequent collisions among the semi-hard partons are treated by considering the elastic gg -> gg processes with screening of the long wavelength modes taken into account. We determine the time $τ_{eq}$ where close to ideal hydrodynamic flow sets in, and find rather similar numbers for central heavy-ion collisions at BNL-RHIC and CERN-LHC energies. The number densities, energy densities and temperatures of the minijet plasma are found to be different at RHIC and LHC, e.g. $T(τ_{eq})\sim220$ MeV and 380 MeV, respectively.

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Gouranga C. Nayak, Adrian Dumitru, Larry McLerran, Walter Greiner. 2000-11-04. Equilibration of the Gluon-Minijet Plasma at RHIC and LHC. https://doi.org/10.1016/s0375-9474(00)00577-7

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