Triple-quark elastic scatterings and thermalization

Triple-quark elastic scattering amplitudes from perturbative QCD are first calculated and then used in a transport equation to study the thermalization of quark matter. By examining momentum isotropy to which the transport equation leads, we can determine thermalization time and offer an initial the...

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Bibliographic Details
Published inPhysics letters. B Vol. 629; no. 2-4; pp. 68 - 76
Main Authors Xu, Xiao-Ming, Ru, Peng, Weber, H.J.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 24.11.2005
Elsevier Science
Subjects
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
Thermalization
Transport equation
Triple-quark scattering
Triple-quark scattering
24.85.+p
Transport equation
Thermalization
25.75.Dw
25.75.Gz
12.38.Mh
Quark matter
Elastic scattering
Quarks
Scattering amplitudes
Quantum chromodynamics
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Summary:Triple-quark elastic scattering amplitudes from perturbative QCD are first calculated and then used in a transport equation to study the thermalization of quark matter. By examining momentum isotropy to which the transport equation leads, we can determine thermalization time and offer an initial thermal quark distribution function. With an anisotropic initial quark distribution, which is relevant to quark matter initially created in a central Au–Au collision at sNN=200GeV, the transport equation gives a time of the order of 1.8 fm/c for quark matter itself to thermalize by the triple-quark scatterings.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2005.09.051