Parton Rescattering Effect on the Charged Hadron Forward-Backward Multiplicity Correlation in pp Collisions at s～(1/2)=200 GeV

Parton Rescattering Effect on the Charged Hadron Forward-Backward Multiplicity Correlation in pp Collisions at s～(1/2)=200 GeV

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摘要 The parton rescattering effect on the charged hadron forward-backward multiplicity correlation in pp collisions at √s =200 GeV is studied by a parton and hadron cascade model, PACIAE, based on the PYTHIA model. The calculated multiplicity and pseudorapidity distribution of the final state charged hadrons are well compared with the experimental data. It is found that the final state charged hadron pseudorapidity distribution is different from the initial state charged partons. The parton rescattering effect on the charged hadron forward-backward multiplicity correlation increases with the increasing parton rescattering strength in the center pseudorapidity region （｜η｜〈 1）. However, this effect becomes weaker in the outer pseudorapidity region （｜η｜〉 1）. The parton rescattering effect on the charged hadron forward-backward multiplicity correlation in pp collisions at √s =200 GeV is studied by a parton and hadron cascade model, PACIAE, based on the PYTHIA model. The calculated multiplicity and pseudorapidity distribution of the final state charged hadrons are well compared with the experimental data. It is found that the final state charged hadron pseudorapidity distribution is different from the initial state charged partons. The parton rescattering effect on the charged hadron forward-backward multiplicity correlation increases with the increasing parton rescattering strength in the center pseudorapidity region （｜η｜〈 1）. However, this effect becomes weaker in the outer pseudorapidity region （｜η｜〉 1）.

作者闫玉良董保国周代梅李笑梅马海亮萨本豪

机构地区 China Institute of Atomic Energy Center of Theoretical Nuclear Physics Institute of Particle Physics CCAST (World Laboratory)

出处《Plasma Science and Technology》 SCIE EI CAS CSCD 2012年第7期577-580,共4页 等离子体科学和技术（英文版）

基金 supported by National Natural Science Foundation of China (Nos. 11047142, 10975062, 11075217, and 10705012)

关键词 forward-backward multiplicity correlation parton rescattering pp collisions forward-backward multiplicity correlation, parton rescattering, pp collisions

分类号 O572.24 [理学—粒子物理与原子核物理]

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Parton Rescattering Effect on the Charged Hadron Forward-Backward Multiplicity Correlation in pp Collisions at s～(1/2)=200 GeV

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