夸克-胶子物质的特征双轻子分布  

Characteristic Dilepton Distribution for Quark-Gluon Matter

作　　者：贺泽君[1] 

机构地区：[1]中国科学院上海原子核研究所,上海201800

出　　处：《高能物理与核物理》1997年第3期269-274,共6页High Energy Physics and Nuclear Physics

摘　　要：运用相对论性的流体力学模型,研究了夸克-胶子火球的双轻子产生,发现随着初始温度的增加零重子的夸克-胶子火球的双轻子总产额在一个平台后单调地上升,而随着初始重子密度的增加富重子的夸克-胶子火球的双轻子总产额呈现一个峰.夸克-胶子物质在碰撞中形成的特征可在将来的 CERN和 Brookhaven 实验中得到检验.Based on the relativistic hydrodynamic model,the dilepton production in the quark-gluon fireball is studied.It is found that with increasing initial temperature the total dilepton yield mconotonicly goes up aftera plateau for the quark-gluon fireball of zero baryon number and shows a peak for the baryon-rich quark-gluon fireball.Such a characteristics as a signal of the quark-gluon matter formation in the collision could be tested in future experiments at CERN and Brookhaven.

关 键 词：相对论性 流体力学模型 夸克-胶子 QCD 

分 类 号：O413.2[理学—理论物理]