Photon Production in a Chemically Equilibrating Quark-Gluon Plasma at Finite Baryon Density： Complete Leading Order Results  

作　　者：龙家丽 贺泽君 马余刚 

机构地区：[1]Shanghai Institute of Applied Physics, Chinese Academy o[ Sciences, PO Box 800-204, Shanghai 201800 [2]CCAST (World Laboratory), PO Box 8730, Beijing 100080 [3]Research Center of Nuclear Theory of National Laboratory of Heavy Ion Accelerator, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000

出　　处：《Chinese Physics Letters》2006年第4期800-803,共4页中国物理快报（英文版）

基　　金：Supported in part by the Knowledge Innovation Project of Chinese Academy Sciences under Grant No KJCX2-N11, the National Natural Science Foundation of China under Grant Nos 10405031, 10328509, and 10135030, the Major Statc Basic Research Development Program of China under Grant No G200077400.

摘　　要：We investigate hard photon production of the near-collinear bremsstrahlung and a new process called the inelastic pair annihilation, fully including the LPM effect, in a chemically equilibrating quark-gluon plasma at finite baryon density, and find that the effect of the system evolution on the photon production and large contribution of the bremsstrahlung make the total photon yield of the two processes as a strongly increasing function of the initial quark chemical potential.We investigate hard photon production of the near-collinear bremsstrahlung and a new process called the inelastic pair annihilation, fully including the LPM effect, in a chemically equilibrating quark-gluon plasma at finite baryon density, and find that the effect of the system evolution on the photon production and large contribution of the bremsstrahlung make the total photon yield of the two processes as a strongly increasing function of the initial quark chemical potential.

关 键 词：HEAVY-ION COLLISIONS NONEQUILIBRIUM GAS 

分 类 号：O53[理学—等离子体物理]