Enhancement of Dileptons with Intermediate Masses Produced in QGP

HE Ze-Jun; Zhou Wen-Jie; JIANG Wei-Zhou; ZHU Zhi-Yuan; LIU Bo

Chinese Physics C> 2001, Vol. 25> Issue(2) : 179-182

Enhancement of Dileptons with Intermediate Masses Produced in QGP

Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Shanghai Institute of Nuclear Research, The Chinese Academy of Science, Shanghai 201800, China3 Institute of High Energy Physics, The Chinese Academy of Sciences, Beiging 100039, China

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Abstract：
The production of dileptons in the intermediate mass region in QGP has been studied on the basis of a relativistic hydrodynamic model. Due to the influence of the phase boundary on the evolution of the QGP system and the high initial temperature of the QGP produced at RHIC energies, the quark phase contribution is much more important than that from hadronic interactions and even comparable with that from background sources. It is shown that such an enhancement is a signature for the QGP formation.

References

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HE Ze-Jun, Zhou Wen-Jie, JIANG Wei-Zhou, ZHU Zhi-Yuan and LIU Bo. Enhancement of Dileptons with Intermediate Masses Produced in QGP[J]. Chinese Physics C, 2001, 25(2): 179-182.

HE Ze-Jun, Zhou Wen-Jie, JIANG Wei-Zhou, ZHU Zhi-Yuan and LIU Bo. Enhancement of Dileptons with Intermediate Masses Produced in QGP[J]. Chinese Physics C, 2001, 25(2): 179-182. shu

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Received: 2000-07-07
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Enhancement of Dileptons with Intermediate Masses Produced in QGP

Corresponding author: HE Ze-Jun,

Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China2 Shanghai Institute of Nuclear Research, The Chinese Academy of Science, Shanghai 201800, China3 Institute of High Energy Physics, The Chinese Academy of Sciences, Beiging 100039, China

Received Date: 2000-07-07
Accepted Date: 1900-01-01
Available Online: 2001-02-05

Abstract: The production of dileptons in the intermediate mass region in QGP has been studied on the basis of a relativistic hydrodynamic model. Due to the influence of the phase boundary on the evolution of the QGP system and the high initial temperature of the QGP produced at RHIC energies, the quark phase contribution is much more important than that from hadronic interactions and even comparable with that from background sources. It is shown that such an enhancement is a signature for the QGP formation.