富重子夸克-胶子物质双轻子产生的快度依赖  

Rapidity Dependence of Dilepton Production in Baryon-Tich Quark-Gluon Matter

作　　者：贺泽君[1] 张家驹[2] 刘波[3] 邱锡钧[1] 

机构地区：[1]中国科学院上海原子核研究所,上海201800 [2]中国科学院上海分院计算测试中心,上海200031 [3]中国科学院高能物理研究所,北京100039

出　　处：《高能物理与核物理》1999年第4期375-379,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!19475060;中国科学院95重大项目!KJ951-A1-410

摘　　要：考虑Drell－Yan本底，基于相对论性流体力学模型，研究了来自197Au十197Au中心碰撞的富重子夸克-胶子物质的双轻子产生的快度依赖．发现随着快度的增加，双轻子产额呈现出强烈的抑制．这个标志富重子夸克-胶子物质形成的特征能够在CERN和Brookhaven将来的实验中得到检验．Considered the Drell-Yan background,the rapidity dependenec of the dilepton production in the baryon-rich quark-gluon matter from 197Au+197Au cental collision has been studied based on a relativistic hydrodnamic model. It is found that the dilepton yield is strongly suppressed with increasing rapidity.Such a characteristic signaling the formation of the baryon-rich quark-gluon matter can be tested in future experimentS at CERN and Brookhaven. Received 23 March 1988* Suppded by the National Natural Science Foundation of China(19475056) and 95' Significant Project of chinese Academy of Science(KJ951-Al-410)

关 键 词：夸克物质 双轻子谱 QGM 快度 富重子夸克 胶子 

分 类 号：O572.3[理学—粒子物理与原子核物理]