Thermalization of quark-gluon matter by 2-to-2 and 3-to-3 elastic scatterings
نویسنده
چکیده
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
منابع مشابه
qq̄q̄ Elastic Scatterings and Thermalization of Quark Matter and Antiquark Matter
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 therm...
متن کاملAn Effective Action for Quasi-elastic Scatterings in QCD
A new effective action for the high energy quark-quark scatterings is obtained by applying a scaling approximation to the QCD action. The propagators are shown to factorize into the transverse and the longitudinal parts so that the scattering amplitudes are given in terms of the products of two dimensional S-matrices. we show that our action provides a natural effective field theory for the Lip...
متن کاملThermalization and Flow of Heavy Quarks in the Quark-Gluon Plasma
Elastic scattering of charm (c) and bottom (b) quarks via Dand B-meson resonance states in an expanding, strongly interacting quark-gluon plasma is investigated. Drag and diffusion coefficients are calculated from an effective model based on chiral symmetry and heavy-quark effective theory, and utilized in a relativistic Langevin simulation to obtain transverse-momentum spectra and elliptic flo...
متن کاملJet Quenching from soft QCD Scattering in the Quark-Gluon Plasma
We show that partons traversing a quark-gluon plasma can lose substantial amounts of energy also by scatterings, and not only through medium-induced radiation as mainly considered previously. Results from Monte Carlo simulations of soft interactions of partons, emerging from a hard scattering, through multiple elastic scatterings on gluons in an expanding relativistic plasma show a sizeable jet...
متن کاملModeling Magnetic Field in Heavy ion Collisions Using Two Different Nuclear Charge Density Distributions
By studying the properties of matter during heavy-ion collisions, a better understanding of the Quark-Gluon plasma is possible. One of the main areas of this study is the calculation of the magnetic field, particularly how the values of conductivity affects this field and how the field strength changes with proper time. In matching the theoretical calculations with results obtained in lab, two diffe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007