The role of the gluonic gg<->ggg interactions in early thermalization in ultrarelativistic heavy-ion collisions

Details The role of the gluonic gg<->ggg interactions in early thermalization in ultrarelativistic heavy-ion collisions The role of the gluonic gg<->ggg interactions in early thermalization in ultrarelativistic heavy-ion collisions

2007-01-18

arxiv.org/abs/hep-ph/0701147v1

Eur.Phys.J.C49:187-191,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures, to appear in the proceedings of Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus-

Scientific paper

10.1140/epjc/s10052-006-0126-1

We ``quantify'' the role of elastic as well as inelastic gg<->ggg pQCD processes in kinetic equilibration within a pQCD inspired parton cascade. The contributions of different processes to kinetic equilibration are manifested by the transport collision rates. We find that in a central Au+Au collision at RHIC energy pQCD Bremstrahlung processes are much more efficient for momentum isotropization compared to elastic scatterings. For the parameters chosen the ratio of their transport collision rates amounts to 5:1.

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