Dilepton production in baryon-rich quark-gluon matter

Dilepton production in baryon-rich quark-gluon matter 1 2 first-author 3 2 4 CCAST World Laboratory) P.O. Box 8730, Beijing 100080 CCAST World Laboratory) P.O. Box 8730, Beijing 100080 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 Computing Center of Shanghai Branch, the Chinese Academy of Sciences, Shanghai 200031 Computing Center of Shanghai Branch, the Chinese Academy of Sciences, Shanghai 200031 Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing 100039 Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing 100039 From the full stopping scenario and considered the Drell-Yang background, the rapidity dependence of the dilepton production from the central collision 197 Au+ 197 Au has been studied in the baryon-rich quark-gluon matter by using a relativistic hydrodynamic model. It can be found that the dilepton yield is strongly suppressed as increasing the rapidity. Such a characteristic signaling the formation of the baryon-rich quark-gluon matter can be tested in future experiments at CERN and Brookhaven. Relativistic heavy-ion collisions Hydrodynamic equation Rapidity dependence of dilepton production References Kajantie K , Kapusta J , McLerran L et al . Phys Rev , 1986 , D34 : 2746 Phys Rev He Ze-Jun , Zhang Jia-Ju , Li Pan-Lin et al . Nucl Phys , 1991 , A532 : 743 Nucl Phys Dumitru A , Rischke D H , Schönfeld Th et al . Phys Rev Lett , 1993 , 70 : 2860 Phys Rev Lett Möhring H J , Ranft J . Z Phys , 1991 , C52 : 643 Z Phys Ko C M , Xia L H . Phys Rev Lett , 1989 , 62 : 1595 Phys Rev Lett He Ze-Jun , Zhang Jia-Ju , Qiu Xi-Jun et al . Nucl Phys , 1997 , A614 ; 552 Nucl Phys Kämpfer B , Pavlenko O P , Gorenstein M I , et al . Z Phys , 1995 , A353 : 71 Z Phys Cleymans J , Fingberg J , Redlich K . Phys Rev , 1987 , C35 : 2153 Phys Rev Owens J F . Phys Lett , 1991 , B266 : 126 Phys Lett Baym G , Friman B L , Blaizot J P et al . Nucl Phys , 1983 , A407 : 541 Nucl Phys Barz H W , Kämpfer B , Csernai L P et al . Phys Lett , 1984 , B134 : 334 Phys Lett He Ze-Jun , Rozmej P , Wu J et al . Nucl Phys , 1987 , A473 : 342 Nucl Phys Bertsch G F . Z Phys , 1978 , A289 : 103 Z Phys Sorge H , Stöcker H et al . Nucl Phys , 1989 , A498 : 567c Nucl Phys The Project Supported by the National Nature Science Foundation of the China under Grant No. 19475060 and partly by the Grant LWTZ-1298 of Chinese Academy of Sciences 1997-12-09 1998-05-01 2021-02-05 1998 Nuclear Science and Techniques 2 9