A Signature for the Formation of the Quark-Gluon Plasma in Nucleus-Nucleus Collisions

HE ZeJun; JIANG WeiZhou; ZHU ZhiYuan; LIU Bo; ZHANG JiaJu

Chinese Physics C> 2000, Vol. 24> Issue(5) : 462-466

A Signature for the Formation of the Quark-Gluon Plasma in Nucleus-Nucleus Collisions

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

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Abstract：
Based on thermodynamic relations, the initial values of the quark gluon system from relativistic nucleus-nucleus collisions are obtained. Using these initial values we have studied the dilepton production on the basis of the relativistic hydrodynamic model, and found that with increasing incident energy a characteristic plateau indicating the formation of the quark-gluon plasma appears in the total yield, which may be tested in future experiments in CERN and Brookhaven.

References

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Kajantie K, Kapusta K, Melerran L D et al. Phys.1986, D34:2747[2] HE ZeJun, ZHANG Jialu, LI Pan Li et al. Nucl. Phys., 1991, A532: 743[3] Dumitru A, Rischke D H et al. Phys. Rev. Lett.,1993,70: 2860[4] Mohring H J, Ranft J. Z. Phys.,1991, C52: 643[5] KO C M, XIA L H. Phys. Rev. Left.,1989, 62[6] HE ZeJun, ZHANG Jialu. QIU Xi1un et al. Nucl. Phys.,1997, A614: 552[7] XIA L H, KO C M, LI C T. Phys. Rev. ,1990, 411: 572[8] Kampfer B, Pavlenko O P, C,orenstein M I et al. Z. Phys.,1995,A353: 71[9] Surge H, Stocker H, Griner W. Nucl. Phys,1989, A498: 567c[10] Ll. G. Q, KO C M, Brown G E. Phys. Rev. Lett.,1995, 75:4007[11] Sdlfrank J,Huovinen P, Kataja M et al. Phys. Rev.,1997, C55:392; Chin. Phys. Lett 1997. 14: 577[12] HF ZeJun, 7HANG JiaJu et al. Chin. Phys. Ixtt.,1999, 16: 259[13] Baym G, Friman B L, Blaiaot J P et al. Nucl. Phys.,1983,A407:541[14] Vogt R, Jacak B V. McGaughey P L et al. Phys. Rev,1994, D49: 3345

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HE ZeJun, JIANG WeiZhou, ZHU ZhiYuan, LIU Bo and ZHANG JiaJu. A Signature for the Formation of the Quark-Gluon Plasma in Nucleus-Nucleus Collisions[J]. Chinese Physics C, 2000, 24(5): 462-466.

HE ZeJun, JIANG WeiZhou, ZHU ZhiYuan, LIU Bo and ZHANG JiaJu. A Signature for the Formation of the Quark-Gluon Plasma in Nucleus-Nucleus Collisions[J]. Chinese Physics C, 2000, 24(5): 462-466. shu

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Received: 1999-10-12
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

A Signature for the Formation of the Quark-Gluon Plasma in Nucleus-Nucleus Collisions

Corresponding author: HE ZeJun,

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

Received Date: 1999-10-12
Accepted Date: 1900-01-01
Available Online: 2000-04-05

Abstract: Based on thermodynamic relations, the initial values of the quark gluon system from relativistic nucleus-nucleus collisions are obtained. Using these initial values we have studied the dilepton production on the basis of the relativistic hydrodynamic model, and found that with increasing incident energy a characteristic plateau indicating the formation of the quark-gluon plasma appears in the total yield, which may be tested in future experiments in CERN and Brookhaven.