qq̄q̄ Elastic Scatterings and Thermalization of Quark Matter and Antiquark Matter
نویسندگان
چکیده
Thermalization of quark matter and antiquark matter is studied with quarkquark-antiquark as well as quark-antiquark-antiquark elastic scatterings. Squared amplitudes of qqq̄ → qqq̄ and qq̄q̄ → qq̄q̄ at order αs are derived in perturbative QCD. Solved by a new technique, solutions of transport equations with the squared amplitudes indicate that the scatterings qqq̄ → qqq̄ and qq̄q̄ → qq̄q̄ shorten the thermalization time of quark matter and antiquark matter. It is emphasized that three-parton and other multi-parton scatterings become important at the high parton number density achieved in RHIC Au-Au collisions. PACS codes: 24.85.+p; 12.38.Mh; 25.75.Nq
منابع مشابه
Thermalization of quark-gluon matter by 2-to-2 and 3-to-3 elastic scatterings
Thermalization of quark-gluon matter is studied with a transport equation that includes contributions of 2-to-2 and 3-to-3 elastic scatterings. Thermalization time is related to the squared amplitudes for the elastic scatterings that are calculated in perturbative QCD. PACS numbers: 24.85.+p;12.38.Mh;12.38.Bx;25.75.Nq
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تاریخ انتشار 2006