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Dilepton Production in an Expanding Hot Baryon-Rich Quark-Gluon Matter |
| He Ze-jun1,2;ZHANG Jia-ju2;JIANG Wei-Zhou1,2;QIU Xi-jun2;LIU Bo1,3, |
| 1Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
2Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800 (mailing address)
3Institute of High Energy, Chinese Academy of Sciences, Beijing 100039
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| Cite this article: |
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He Ze-jun, ZHANG Jia-ju, JIANG Wei-Zhou et al 1999 Chin. Phys. Lett. 16 259-261 |
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Abstract From the full stopping scenario, a relativistic hydrodynamic model describing the evolution of the baryon-rich quark-gluon matter fire-cylinder has been established. Based on it, the rapidity Distribution of dileptons with intermediate invariant masses has been studied. It is found that the quark phase gives the dominant contribution to the dilepton spectrum due to the influence of the phase boundary on the evolution of the system, especially the dilepton yield is strongly suppressed with the increasing rapidity.
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25.75.Dw
12.38.Mh
24.10.Nz
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Published: 01 April 1999
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