Study of Event-by-Event Fluctuations in the Charged Particle Ratio in High Energy Heavy-Ion Collisions

ZHOU Dai-Mei; CAI Xu; LIU Zhi-Yi; LU Zhong-Dao; SA Ben-Hao

Chinese Physics C> 2002, Vol. 26> Issue(12) : 1271-1276

Study of Event-by-Event Fluctuations in the Charged Particle Ratio in High Energy Heavy-Ion Collisions

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China2 China Institute of Atomic Energy,Beijing 102413,China

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Using a hadron and string cascade model,JPCIAE,and the corresponding Monte Carlo events generator,the behavior of the charged particle ratio event-by-event fluctuations in subsystem depending on energy,centrality,resonance decay and rapidity interval was investigated for Pb+Pb collisions at SPS and ALICE energies,and for Au+Au collisions at RHIC energies. The model results of charged particle ratio event-by-event fluctuations as a function of the rapidity interval in Pb+Pb collisions at SPS energies were comparable with the preliminary NA49 data. It turned out that the charged particle ratio fluctuation has no strong energy,centrality,resonance decay and rapidity interval dependences.

References

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ZHOU Dai-Mei, CAI Xu, LIU Zhi-Yi, LU Zhong-Dao and SA Ben-Hao. Study of Event-by-Event Fluctuations in the Charged Particle Ratio in High Energy Heavy-Ion Collisions[J]. Chinese Physics C, 2002, 26(12): 1271-1276.

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Received: 2002-01-08
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of Event-by-Event Fluctuations in the Charged Particle Ratio in High Energy Heavy-Ion Collisions

Corresponding author: ZHOU Dai-Mei,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China2 China Institute of Atomic Energy,Beijing 102413,China

Received Date: 2002-01-08

Accepted Date: 1900-01-01

Available Online: 2002-12-05

Abstract: Using a hadron and string cascade model,JPCIAE,and the corresponding Monte Carlo events generator,the behavior of the charged particle ratio event-by-event fluctuations in subsystem depending on energy,centrality,resonance decay and rapidity interval was investigated for Pb+Pb collisions at SPS and ALICE energies,and for Au+Au collisions at RHIC energies. The model results of charged particle ratio event-by-event fluctuations as a function of the rapidity interval in Pb+Pb collisions at SPS energies were comparable with the preliminary NA49 data. It turned out that the charged particle ratio fluctuation has no strong energy,centrality,resonance decay and rapidity interval dependences.

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Study of Event-by-Event Fluctuations in the Charged Particle Ratio in High Energy Heavy-Ion Collisions

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