Direct Photon Production in PACIAE Model at RHIC Energy  

作　　者：LI Xiao-mei LI Shou-ping HU Shou-yang ZHOU Dai-mei TAN Zhi-guang ZHOU Feng SA Ben-hao 

机构地区：[1]不详 [2]Institute of Particle Physic Huazhong Normal University, Wuhan 430079, China

出　　处：《Annual Report of China Institute of Atomic Energy》2006年第1期109-109,共1页中国原子能科学研究院年报（英文版）

基　　金：NSFC(10545003,10475032)

摘　　要：The direct photon is a good electromagnetic probe for earlier dynamics and QGP formation in relativistic heavy-ion collisions, because the direct photon is produced mainly in the earlier stageThe direct photon is a good electromagnetic probe for earlier dynamics and QGP formation in relativistic heavy-ion collisions, because the direct photon is produced mainly in the earlier stage of collision and it suffers very weak interaction later on. Therefore, it plays a special role in the judgment of whether the high/~r suppression is an initial or final state effect. Because of the extremely strong decay photon contamination it is very hard to identify the direct photon signal.

关 键 词：光子反应 核反应 能量 核技术 

分 类 号：TL3[核科学技术—核技术及应用]