Parton rescattering and screening in Au+Au collisions at RHIC

Details Parton rescattering and screening in Au+Au collisions at RHIC Parton rescattering and screening in Au+Au collisions at RHIC

2002-07-16

arxiv.org/abs/nucl-th/0207042v2

Phys.Lett.B551:277-283,2003

Physics

Nuclear Physics

Nuclear Theory

6 pages, 4 figures, uses RevTeX 4.0; revised version with minor corrections and one updated figure

Scientific paper

10.1016/S0370-2693(02)03068-X

We study the microscopic dynamics of quarks and gluons in relativistic heavy ion collisions in the framework of the Parton Cascade Model. We use lowest order perturbative QCD cross sections with fixed lower momentum cutoff p_0. We calculate the time-evolution of the Debye-screening mass for Au+Au collisions at sqrt(s)=200 GeV per nucleon pair. The screening mass is used to determine a lower limit for the allowed range of p_0. We also determine the energy density reached through hard and semi-hard processes at RHIC, obtain a lower bound for the rapidity density of charged hadrons produced by semihard interactions, and analyze the extent of perturbative rescattering among partons.

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