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arXiv 0801.3313nucl-th
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$\sqrt s$ =200 GeV的$pp$碰撞中部分子再散射对带电强子前后多重关联的影响

Parton rescattering effect on the charged hadron forward-backward multiplicity correlation in $pp$ collisions at $\sqrt s$=200 GeV

Yu-Liang Yan, Bao-Guo Dong, Dai-Mei Zhou, Xiao-Mei Li, Hai-Liang Ma, Ben-Hao Sa

摘要:

利用基于PYTHIA模型的部分子-强子级联模型PACIAE,研究了$\sqrt s$ =200 GeV的$pp$碰撞中部分子再散射对带电强子前向-后向多重关联的影响.计算的末态带电强子的多重数和赝快度分布与实验数据进行了比较。结果表明,末态带电强子的赝快度分布与初态带电部分子的赝快度分布不同。在中心赝快度区($|η| <1$),部分子再散射对带电强子前后多重关联的影响随部分子再散射强度的增加而增加。然而,这种影响变得较弱的外赝快度区($|η|> 1$)。

英文摘要:

The parton rescattering effect on the charged hadron forward-backward multiplicity correlation in $pp$ collisions at $\sqrt s$=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 hadron are well compared with experimental data. It turned out that the final state charged hadron pseudorapidity distribution are different from the initial state charged partons. The parton rescattering effect on the charged hadron forward-backward multiplicity correlation increases with increasing parton rescattering strength in the center pseudorapidity region ($|η| <1$). However, this effect becomes weaker in the outer pseudorapidity region ($|η|> 1$).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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