Energy and Centrality Dependences of Charged Multiplicity Pseudorapidity Density in Relativistic Nuclear Collisions

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

Chinese Physics C> 2002, Vol. 26> Issue(10) : 1072-1077

Energy and Centrality Dependences of Charged Multiplicity Pseudorapidity Density in Relativistic Nuclear 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 energy and centrality dependences of charged particle pseudorapidity density in relativistic nuclear collisions were studied. Within the framework of this model, both the relativistic pp experimental data and the PHOBOS and PHENIX Au+Au data could be reproduced fairly well without retuning the model parameters. This paper shows that since part> is not a well defined physical variable both experimentally and theoretically, the charged particle pseudorapidity density per participant pair can increase and also can decrease with increasing of part>, so it may be hard to use charged particle pseudorapidity density per participant pair as a function of part> to distinguish various theoretical models for particle production.

References

[1]

. Back B B et al(PHOBOS Collab.).Phys.Rev.Lett.,2000,85:3100—3104 2. Adcox K et al(PHENIX Collab.).Phys.Rev.Lett.,2001,86:35003. Gorestein M I,YANGSN ,Ko C M .Phys.lett.,1992,B281:197—2014. Kapusta J I,Vischer A P .Phys.Rev.,1995,C52:2725—27325. WANG XinNian,GyulassyM .Phys.Rev.Lett.,2001,86:3496—3499 6. Eskola K J,Kajantie K ,Tuominen K .Phys.Lett.,2001,B497:39—43 7. Kharzeev D ,Nardi M .Phys.Lett.,2001,B507:121—128 8. SA Ben-Hao et al.Phys.Rev.,1999,C59:2728—2733;SA Ben-Hao,TAI An.Phys.Rev.,2000,C62:0449059. Sjostrand T .Comp.Phys.Comm.,1994,82:74—90 10. Cugnon J,Mizutain T ,Vandermeulen J.Nucl.Phys.,1981,A352:505—534 11. Bertsch G F ,Das Gupta S .Phys.Rep.,1981,160:189—23312. TAI An,SA Ben-Hao.Comp.Phys.Comm.,1999,116:353—365 13. ZHOU DaiMei et al.Chin.Phys.Lett.,2001,18:1044—1046 14. Back B Betal(PHOBOS Collab.).nucl-th/010501115. MIAO BiXia,CHAO WeiQin.Nucl.Phys.,1989,A494:620—630;SA Ben-Hao,ZHENG Yu-Ming,ZHANG Xiao-Ze.Phys.Rev.,1989,C40:2680—268316. Andersson B ,Gustafson G ,PI Hong.Z .Phys.,1993,C57:485—494 17. ZHANG Bin et al.Phys.Rev.,2000,C61:067901;LIN Zi-Wei et al.Phys.Rev.,2001,C64:011902

[1]	MENG Cai-Rong . Proton rapidity distribution in nucleus-nucleus collisions at high energy. Chinese Physics C, 2006, 30(4): 322-326.
[2]	SONG Fu , LIU Fu-Hu . Particle (pseudo) Rapidity Distribution and the Overlapping Cylinder Model in Nucleus-Nucleus Collisions at High Energies. Chinese Physics C, 2005, 29(5): 461-466.
[3]	Feng Shengqin , Wang Zhengqing . Rapidity Distribution of Various Charged Hadrons in High Energy Nucleus-Nucleus Interactions. Chinese Physics C, 1996, 20(10): 919-924.
[4]	Liu Qingjun , Zhao Weiqin . Geometric and Fragmentation Effects of Leading Particle Rapidity Distributions for High Energy p-Ag Collisions. Chinese Physics C, 1995, 19(4): 340-347.
[5]	Feng Shengqin , Wang Zhengqing . Correlation of Rapidity Distribution and Transverse Energy in High Energy Hadron-Nucleus Interactions. Chinese Physics C, 1995, 19(10): 916-920.
[6]	Jiang Zhijin , Yan Xunling , Li Jiarong . Independent Source Model and Mid-Repidity Transverse Energy Distributions for Nucleus-Nucleus Collisions. Chinese Physics C, 1995, 19(6): 508-512.
[7]	Wang Shaoshun , Xiao Chenguo , Zhang Jie , Xia Xiaojuan , Xiong Weijun , Zhong Yu . The Study of Particle Densities in Pseudorapidity Space in pp collisions at 400GeV/c. Chinese Physics C, 1994, 18(5): 392-397.
[8]	. Local Characters of Finite State Multiplicity Spectra in High Energy Heavy-Ion Central Collisions. Chinese Physics C, 1994, 18(10): 884-891.
[9]	QIN Yu-Ming . Multiplicity Distribution of Grey Particles in High Energy Nucleus-Nucleus Collisions and Statistical Model. Chinese Physics C, 1992, 16(10): 928-932.
[10]	LIU Bo , ZHAO Wei-Qin . Negative Particle Rapidity Distribution in Relativistic Heavy Ion Collisions. Chinese Physics C, 1991, 15(3): 220-223.
[11]	WANG Shao-Shun , ZHANG Jie , YE Yun-Xiu , XIAO Chen-Guo , CHENG Zheng-Dong , ZHANG Xue-Qian , LUO Qi . Measurement of Semi-Inclusive Charged Particle Pseudorapidity Destributions in pp Collisions at 400GeV/c. Chinese Physics C, 1991, 15(12): 1057-1062.
[12]	LIU Bo , ZHAO Wei-Qin . Rapidity Distributions of E_T and n in RHIC and the Effect of Secondary Collisions. Chinese Physics C, 1991, 15(6): 543-548.
[13]	SHI Ya-Fei , WANG Zheng-Qing . Multiplicity Distributions for Different Rapidity Windows in High Energy Collisions. Chinese Physics C, 1991, 15(11): 1015-1019.
[14]	LAI Xiao-Ping , XIE Qu-Bing , FANG Hai-Ping . SEMI-INCL USIVE DISTRIBUTIONS AND RAPIDITY DEPENDENCE OF MULTIPLICITY DISTRIBUTIONS IN e⁺e^－ ANNIHILATION INTO TWO JETS. Chinese Physics C, 1990, 14(1): 24-30.
[15]	SHI Ya-Fei , ZHUANG Peng-Fei , LIU Lian-Shou . PAPIDITY DISTRIBUTIONS IN HIGH-ENERGY NUCLEUS-NUCLEUS COLLISIONS AND MULTISOURCE MODEL. Chinese Physics C, 1990, 14(1): 56-63.
[16]	WU Yuan-Fang , LIU Lian-Shou . EVEN-ODD CHARGED MULTIPLICITY DISTRIBUTIONS AND ENERGY DEPENDENCE OF NORMALIZED MULTIPLICITY MOMENTS IN DIFERENT RAPIDITY WINDOWS. Chinese Physics C, 1990, 14(2): 145-151.
[17]	ZHUANG Peng-Fei , LIU Lian-Shou . INDEPENDENCE OF MULTIPLICITY MOMENTS ON ENERGY,TARGET MASS AND RAPIDITY WINDOW IN NUCLEUS-NUCLEUS COLLISIONS. Chinese Physics C, 1990, 14(5): 427-434.
[18]	CHEN Zhi-Jiang , XIE Qu-Bing , MA Wen-Jun . THE NEAREST CORRELATION IN RAPIDITY AND THE MULTIPLICITY DISTRIBUTION IN e⁺e^－ ANNIHILATION. Chinese Physics C, 1988, 12(6): 742-748.
[19]	ZHUANG Peng-Fei , WANG Zheng-Qing . PAPIDITY DISTRIBUTIONS IN UNEQUAL NUCLEI COLLISION AT HIGH ENERGIES AND HYDRODYNAMICAL MODEL. Chinese Physics C, 1987, 11(1): 44-50.
[20]	XIE Yi-Gang . RAPIDITY CORRELATION OF FORWARD-BACKWARD MULTIPLICITIES. Chinese Physics C, 1985, 9(5): 520-525.

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ZHOU Dai-Mei, SA Ben-Hao, LU Zhong-Dao and CAI Xu. Energy and Centrality Dependences of Charged Multiplicity Pseudorapidity Density in Relativistic Nuclear Collisions[J]. Chinese Physics C, 2002, 26(10): 1072-1077.

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Received: 2001-12-17
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

Energy and Centrality Dependences of Charged Multiplicity Pseudorapidity Density in Relativistic Nuclear 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: 2001-12-17

Accepted Date: 1900-01-01

Available Online: 2002-10-05

Abstract: Using a hadron and string cascade model, JPCIAE, and the corresponding Monte Carlo events generator, the energy and centrality dependences of charged particle pseudorapidity density in relativistic nuclear collisions were studied. Within the framework of this model, both the relativistic pp experimental data and the PHOBOS and PHENIX Au+Au data could be reproduced fairly well without retuning the model parameters. This paper shows that since part> is not a well defined physical variable both experimentally and theoretically, the charged particle pseudorapidity density per participant pair can increase and also can decrease with increasing of part>, so it may be hard to use charged particle pseudorapidity density per participant pair as a function of part> to distinguish various theoretical models for particle production.

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Energy and Centrality Dependences of Charged Multiplicity Pseudorapidity Density in Relativistic Nuclear Collisions

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