摘要
Based on a relativistic hydrodynamic model,the dilepton production in a baryon-rich quark-gluon fireball is studied.We Hnd that at invariant masses between 2mπ and 1 GeV,with increasing initial baryon density,a characteristic valley and a subsequent peak appear in the total dilepton yield,which signal more uniquely the baryon-rich quark-gluon matter formation and can be tested in future experiments at CERN and Brookhaven.
基金
Supported in part by the Grant LWTZ-1298 of Chinese Academy of Sciences
the National Natural Science Foundation of China。
