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Studies of parton thermalization at RHIC

Ghi R Shin1 and Berndt Müller2

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We consider the evolution of a parton system which is formed in the central region just after a relativistic heavy ion collision. The parton consists of mostly gluons, minijets, which are produced by elastic scattering between constituent partons of the colliding nuclei. We assume that the system can be described by a semi-classical Boltzmann transport equation, which we solve by means of the test particle Monte Carlo method including retardation. The partons proliferate via secondary radiative ggggg processes until the thermalization is reached for some assumptions. The extended system is thermalized at about t = 1.6 fm c−1 with T = 570 MeV and remains in kinetic equilibrium for about 2 fm c−1 with breaking temperature T = 360 MeV in the rapidity central region.


PACS

24.85.+p Quarks, gluons, and QCD in nuclear reactions

25.75.Dw Particle and resonance production

14.70.Dj Gluons

02.50.Ng Distribution theory and Monte Carlo studies

13.87.-a Jets in large-Q2 scattering

12.39.-x Phenomenological quark models

Subjects

Computational physics

Nuclear physics

Particle physics and field theory

Dates

Issue 11 (November 2003)

Received 17 June 2003

Published 6 October 2003



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