Measures of Charge Fluctuation in Nucleonic and Nuclear Collisions

FENG Ao-Qi; WU Yuan-Fan

Chinese Physics C> 2005, Vol. 29> Issue(8) : 766-769

Measures of Charge Fluctuation in Nucleonic and Nuclear Collisions

FENG Ao-Qi ,
WU Yuan-Fan ^,

Institute of Particle Physics,Huazhong Normal University, Wuhan 430079, China

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Abstract：
The dependencies of all suggested measures for charge fluctuation on the size of rapidity window are compared using the nucleonic and nuclear collision models—PYTHIA and RQMD. It is found that such dependency is model dependent. However, the charge correlations have the best measure for the effects of global charge conservation and short-range rapidity correlation and is therefore recommended.

References

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. Jeon S, Koch V. Phys. Rev. Lett . , 2000, 85: 2076;Koch V, BleicherM, Jeon S. Nucl. Phys . , 2002, A698: 2612. Asakawa M, Heinz U,M..ller B. Phys. Rev. Lett . , 2000, 85: 20723. Hatta Y, Stephanov M A. Phys. Rev. Lett. , 2003, 91: 1020034. Adams J et al (STAR Coll.) . Phys. Rev. , 2003, C68: 044905; ClaudeA. Pruneau, nucl-ex/ 03040215. EHS/ NA22 Collaborat ion. hep-ex/ 04110746. Bleicher M, Jeon S, Koch V. Phys. Rev. , 2000, C62: 0619027. Mrówczynski S. Phys. Rev. , 2002, C66: 024902; nucl th/ 0112007;nucl th/ 99050218. Pruneau C, Gavin S, Voloshin S. Phys.Rev. , 2002, C66: 0449049. Adcox K et al ( PHENIX Coll.) . Phys. Rev. Lett. , 2002, 89:082301; Nystrand J. nucl-ex/020901910. Sjstrand T. Comp. Phys. Commun. , 1994, 82: 7411. Sorge H, Stcker H, Greiner W. Ann. Phys. ( N. Y. ) , 1989, 192:266; Sorge H. Phys. Rev. , 1995, C52: 329112. Mit chell J T. nucl-ex/0404005

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FENG Ao-Qi and WU Yuan-Fan. Measures of Charge Fluctuation in Nucleonic and Nuclear Collisions[J]. Chinese Physics C, 2005, 29(8): 766-769.

FENG Ao-Qi and WU Yuan-Fan. Measures of Charge Fluctuation in Nucleonic and Nuclear Collisions[J]. Chinese Physics C, 2005, 29(8): 766-769. shu

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Received: 2004-11-24
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

Measures of Charge Fluctuation in Nucleonic and Nuclear Collisions

FENG Ao-Qi
WU Yuan-Fan ^,

Corresponding author: WU Yuan-Fan,

Institute of Particle Physics,Huazhong Normal University, Wuhan 430079, China

Received Date: 2004-11-24
Accepted Date: 1900-01-01
Available Online: 2005-08-05

Abstract: The dependencies of all suggested measures for charge fluctuation on the size of rapidity window are compared using the nucleonic and nuclear collision models—PYTHIA and RQMD. It is found that such dependency is model dependent. However, the charge correlations have the best measure for the effects of global charge conservation and short-range rapidity correlation and is therefore recommended.