Dilepton as a signature for baryon-rich quark-gluon matter  

作　　者：He Ze-Junl Zhang Jia-Ju Liu Bo (Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator,Lanshou 730000 Shanghai institute of Nuclear Rescarch, the Chinese Academy of Sciences, Shanghai 201800 Institate of High Enerpy Physics, 

出　　处：《Nuclear Science and Techniques》1998年第4期209-212,共4页核技术（英文）

摘　　要：Considered the Drell-Yan background in the intermediate invariant mass region,the dilepton production in an expanding hot baryon-rich quark-gluon matter fire-cylinder hasbeen studied based on a previously established rclativistic hydrodynamic model. It is foundthat with increasing the rapidity the dilepton yield is strongly suppressed. Such a characteristic, signaling the formation of the baryon-rich quark-gluon matter, can be tested in futureexperiments at Brookhaven and CERN.Considered the Drell-Yan background in the intermediate invariant mass region,the dilepton production in an expanding hot baryon-rich quark-gluon matter fire-cylinder hasbeen studied based on a previously established rclativistic hydrodynamic model. It is foundthat with increasing the rapidity the dilepton yield is strongly suppressed. Such a characteristic, signaling the formation of the baryon-rich quark-gluon matter, can be tested in futureexperiments at Brookhaven and CERN.

关 键 词：重离子 夸克-胶子物质 轻子产生 

分 类 号：O572.243[理学—粒子物理与原子核物理]