Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e+e－ Annihilation at Z0 Energy Region

Xie Yigang; Chai Yong

Chinese Physics C> 1994, Vol. 18> Issue(9) : 778-787

Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e⁺e^－ Annihilation at Z⁰ Energy Region

Xie Yigang ^, ,
Chai Yong

Institute of High Energy Physics, Academia Sinica, Beijing 100039

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Abstract：
The charged multiplicity distributions of hadron final states in the e⁺e^－ annihilation at the 91.2 GeV Z⁰ energy region are fitted with Poisson shape in different rapidity windows for double and single hemisphere. The multiplicities which are in Poisson-like shapes can be got according to the parameter /D and fitting qualities are compared with the results derived from the relevant theoretical models.The relationship between the Poisson-like shape and KNO scaling is discussed. The connection between the parameters expressing the deviation from the Poisson shape and non-independent particle emission and multiplicity correlation strength is analyzed. The "shoulder structure" is observed in the central rapidity region and analyzed with multi-jets by using the JADE jet analysis algorithm.

References

[1]

D.Decampetal,ALEPH Collaboration,Phys.Lett,B273（1991）181;P.Abreuetal,DELPHI Collabiration,Z.Physics,C50（1990）185.[2]T.T.ChouandC.N.Yang,Phys.Lett.B167（1986）453;Phys Rev.Lett.,55（1985）1359;Phys.Lett,B193（1987）531.[3]T.T.ChouandC.N.Yang,Proceeding of 25th International Conferenceon High Energy Physics（Singapore,1991）,Vol.2,p1013.[4]A.Capellaetal,Phys.Rev.,D37（1988）1763.[5]P.Abreuetal,DELPHI Collaboration,Z.Phys.,C52（1991）271.[6]D.Decampetal,ALEPH Collaboration,Nucl.Inst.Meth,A294（1990）121.[7]D.Decampetal,ALEPH Collaboration,Phys.Lett.,B234（1990）209.[8]A.Wroblewski.Acta Phys.Pol,B4（1974）857.[9]S.Barshay,（internal paper of Ⅲ Physikalisches Institut Technische Hochsckule Aachen,Germany）,Possibility of Observable New Behavier for Multiparticle Production in e+e- Annihilation at LEP.[10]A.Giovannini et al,XXI International Symposiumon Multiparticle Dynamics（1991）,Wuhan,China,p285.[11]W.Braunschweig et al,TASSO Collaboration,Z.Phys.,C45（1989）193.[12]Yi-GangXieetal,ALEPH Collaboration,XXI International Symposiumon Multiparticle Dynamic(1991), Wuhan, China, p172 [13]P.Abreu et al., DELPHI Collaboration, Z. Phys., C56(1992)63.[14]W.Bartel et al., JADE Collaboration, Z. Phys., C33(1986)23.

[1]	LIU Zhen-An . Z⁰ Data Analysis in L3 Cosmic-Ray Experiment. Chinese Physics C, 2003, 27(5): 395-398.
[2]	WANG Hai-Long , LIU Xi-Ming , WANG Yu-Shui . Mass Dependence of Hadron Production Rates in e⁺e^－ Annihilations at High Energy. Chinese Physics C, 2002, 26(5): 471-476.
[3]	Ding Yibing , Li Xueqian , Wang Jianxiong , Zhang Zhaoxi , Xie Yuehong . On the Observation Effects of Higgs Particle in e⁺e^—→bb Z⁰ and tt－Z⁰ at LEP Ⅱ and NLC. Chinese Physics C, 1996, 20(11): 982-990.
[4]	Xie Yigang , Huang Xiuping , Lin Jianfeng , Xu Rongfen . Hadron Multiplicity Distributions and the Related Parameters in e⁺e^－ Annihilation at Z⁰ Energy Region. Chinese Physics C, 1996, 20(11): 972-981.
[5]	Lan Qikai , Liu Lianshou . Variation of Multiplicity Distributions for Mean Transverse Momentum with Cutoff in Hardon-Hardon Collisions. Chinese Physics C, 1995, 19(9): 826-833.
[6]	LIU Liang-Gang . ρ⁰-ω Mixing Effect in the (ρ⁰,ω)→e⁺e^－ Pair Decay. Chinese Physics C, 1993, 17(7): 614-618.
[7]	ZHANG Zhao-Xi , CHEN Yu-Qi . The Production of B_c⁽B_c) Meson Through Z⁰ Boson Decay. Chinese Physics C, 1992, 16(4): 335-339.
[8]	LI Tie-Zhong . The Relation of Family and Extra Z⁰ Boson Number. Chinese Physics C, 1992, 16(1): 15-21.
[9]	JIN Bing-Nian , XU Ya-Di . Z⁰ Line Shape Fit. Chinese Physics C, 1992, 16(3): 197-201.
[10]	Jin Bingnian , Xu Yadi . Z⁰ Line Shape Fit. Chinese Physics C, 1992, 16(S1): 11-16.
[11]	PEI Guo-Xi , XIE Jia-Lin , ZHOU Shu , SUN Song-Lan . OPTIMIZATION OF BEPC POSITRON SOURCE. Chinese Physics C, 1990, 14(2): 110-117.
[12]	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.
[13]	ZHOU Jing-Chen , CAI Xu . BREAK DOWN OF UNIVERSALITY OF KNO SCALED MULTIPLICITY DISTRIBUTIONS IN HIGH ENERGY HADRON-NUCLEUS COLLISIONS AND MULTISOURCE MODEL. Chinese Physics C, 1989, 13(10): 896-899.
[14]	LIU Bo , WANG Ying-Cai . MULTIPLICITY DISTRIBUTIONS OF PRODUCED PARTICLES IN α-α COLLISIONS AT HIGH ENERGIES. Chinese Physics C, 1988, 12(1): 69-74.
[15]	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.
[16]	LIANG Zuo-Tang , XIE Qu-Bing . MULTIPLICITY DISTRIBUTION IN e⁺e^－ ANNIHILATION. Chinese Physics C, 1987, 11(6): 840-843.
[17]	XIE Jia-Lin . ON THE AVERAGE LUMINOSITY OF ELECTRON POSITRON COLLIDER AND POSITRON-PRODUING ENERGY. Chinese Physics C, 1985, 9(5): 577-585.
[18]	LIU Yao-Yang . RADIATIVE DECAY OF Z⁰ AND HEAVY LEPTON. Chinese Physics C, 1985, 9(4): 505-507.
[19]	CHANG CHAO-XI . ON STRUCTURE OF MULTIPARTICLES IN QUARK JETS FOR e⁺e^- COLLIDING. Chinese Physics C, 1982, 6(1): 123-128.
[20]	WU JING-YUAN , WU DAN-DI , LI XIAO-YUAN . HEAVY LEPTON τ PRODUCED IN e⁺e^- ANNIHILATION BY THE INTERFERENCE BETWEEN ELECTROMAGNETIC AND WEAK INTERACTIONS AND PARITY VIOLATION EFFECTS. Chinese Physics C, 1979, 3(1): 108-112.

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Xie Yigang and Chai Yong. Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e⁺e^－ Annihilation at Z⁰ Energy Region[J]. Chinese Physics C, 1994, 18(9): 778-787.

Xie Yigang and Chai Yong. Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e⁺e^－ Annihilation at Z⁰ Energy Region[J]. Chinese Physics C, 1994, 18(9): 778-787. shu

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Received: 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

Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e⁺e^－ Annihilation at Z⁰ Energy Region

Corresponding author: Xie Yigang,

Institute of High Energy Physics, Academia Sinica, Beijing 100039

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1994-09-05

Abstract: The charged multiplicity distributions of hadron final states in the e⁺e^－ annihilation at the 91.2 GeV Z⁰ energy region are fitted with Poisson shape in different rapidity windows for double and single hemisphere. The multiplicities which are in Poisson-like shapes can be got according to the parameter /D and fitting qualities are compared with the results derived from the relevant theoretical models.The relationship between the Poisson-like shape and KNO scaling is discussed. The connection between the parameters expressing the deviation from the Poisson shape and non-independent particle emission and multiplicity correlation strength is analyzed. The "shoulder structure" is observed in the central rapidity region and analyzed with multi-jets by using the JADE jet analysis algorithm.

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Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e⁺e^－ Annihilation at Z⁰ Energy Region

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Poisson-Like Shape and Shoulder Structure of Hadron Multiplicity Distributions in e⁺e^－ Annihilation at Z⁰ Energy Region

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