Thermalization of quark-gluon matter with the elastic scattering of gqq, gqqbar and gqbarqbar

Abstract

The elastic scattering of gqq, gqqbar and gqbarqbar and the thermalization of quark-gluon matter are studied. According to Feynman diagrams at the tree level, squared amplitudes for the elastic gqq scattering and the elastic gqqbar scattering are derived in perturbative QCD. Transport equations including the squared amplitudes for the elastic gqq, gqqbar and gqbarqbar scattering are established. Corresponding to anisotropic gluon and quark distributions created in central Au-Au collisions at RHIC, solutions of the transport equations show that thermalization time of quark matter can be shortened by the elastic gqq, gqqbar and gqbarqbar scattering.

28 pages, 16 figures

References in corpus (4)

• Strongly Interacting Low Viscosity Matter Created in Heavy Ion Collisions
• Triple-quark elastic scatterings and thermalization
• qqqbar to qqqbar and qqbarqbar to qqbarqbar Elastic Scatterings and Thermalization of Quark Matter and Antiquark Matter
• Thermalization of quark-gluon matter by 2-to-2 and 3-to-3 elastic scatterings