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arXiv 1402.6820hep-ph
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大型强子对撞机质子-质子碰撞前向快度区的多重数分布

Multiplicity distributions in the forward rapidity region in proton-proton collisions at the Large Hadron Collider

Premomoy Ghosh, Sanjib Muhuri

摘要:

用负二项分布(NBD)函数分析了大型强子对撞机(LHC)上质心能量为$\sqrt {s}$ = 7 TeV的$proton-proton$($pp$)碰撞前向快度区产生的初级带电粒子的多重数分布。与$\sqrt {s}$ = 7 TeV的$pp$碰撞中快度区的多重数分布一样,正向区的最小偏置事件的分布也可以用两个NBD的叠加来更好地描述,正如由两个过程“$soft$“和“$hard$“产生粒子的两组分模型所提出的那样。然而,在一个大的赝快度窗口中的“硬QCD”事件的多重数分布并不要求二分量模型。

英文摘要:

Measured multiplicity distributions of primary charged particles produced in the forward rapidity region of the $proton-proton$ ($pp$) collisions at the centre-of-mass energy, $\sqrt {s}$ = 7 TeV at the Large Hadron Collider (LHC) have been analyzed in terms of the Negative Binomial Distribution (NBD) function. Like the multiplicity distributions in the mid-rapidity region for the $pp$ collisions at $\sqrt {s}$ = 7 TeV, the distributions for the minimum bias events in the forward region also are better described with the superposition of two-NBDs, as proposed by a two-component model of particle production from two processes, the "$soft$" and the "$hard$". However, the multiplicity distribution for the "hard-QCD" events in a large pseudorapidity window does not oblige the two-component model.

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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