Recursive method for opacity expansion at finite temperature  

作　　者：刘嘉 康忠波 王恩科 

机构地区：[1]Institute of Particle Physics,Huazhong Normal University [2]Key Laboratory of Quark & Lepton Physics(Huazhong Normal University),Ministry of Education,China [3]RIKEN BNL Research Center,Brookhaven National Laboratory,Upton,NY 11973,USA

出　　处：《Chinese Physics C》2011年第1期44-49,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10825523,10635020,10875052);MOE of China(IRT0624);MOST of China(2008CB317106);MOE and SAFEA of China under Project (PITDU-B08033)

摘　　要：Using a reaction operator approach, we derive the multiple-scattering induced gluon number distribution function to all orders in powers of opacity at finite temperature. The detailed balance effect is analyzed by taking into account both gluon emission and absorption in a thermal medium. We also calculate virtual corrections and show that the infrared divergence cancels out in the gtuon distribution function at finite temperature.Using a reaction operator approach, we derive the multiple-scattering induced gluon number distribution function to all orders in powers of opacity at finite temperature. The detailed balance effect is analyzed by taking into account both gluon emission and absorption in a thermal medium. We also calculate virtual corrections and show that the infrared divergence cancels out in the gtuon distribution function at finite temperature.

关 键 词：JET-QUENCHING non-abelian energy loss opacity expansion detailed balance 

分 类 号：O572.32[理学—粒子物理与原子核物理]