Incident energy dependence of dilepton production in an expanding baryon-rich quark-gluon fireball  

作　　者：He Ze Jun 1,2 , Zhang Jia Ju 3, Wang Zi Xing 2 and Liu Bo 4 ( 1CCAST (World Laboratory ), P.O.Box 8730, Beijing 100080 2Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 3Computing 

出　　处：《Nuclear Science and Techniques》1998年第1期5-7,共3页核技术（英文）

摘　　要：Ｉｎｃｉｄｅｎｔｅｎｅｒｇｙｄｅｐｅｎｄｅｎｃｅｏｆｄｉｌｅｐｔｏｎｐｒｏｄｕｃｔｉｏｎｉｎａｎｅｘｐａｎｄｉｎｇｂａｒｙｏｎ－ｒｉｃｈｑｕａｒｋ－ｇｌｕｏｎｆｉｒｅｂａｌＨｅＺｅＪｕｎ１，２，ＺｈａｎｇＪｉａＪｕ３，ＷａｎｇＺｉＸｉｎｇ２ａ...From the full stopping scenario, the dilepton production in the baryon rich quark gluon fireball based on a relativistic hydrodynamic model is studied, and it is found that with increasing incident energy a characteristic plateau indicating the formation of the baryon rich quark gluon matter appears in the total yield.

关 键 词：重离子碰撞 双轻子产生 夸克-胶子火球 

分 类 号：O572.243[理学—粒子物理与原子核物理]