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arXiv 1509.07541nucl-exhep-ex
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$\sqrt{s}$ = 0.9 ~ 8 TeV质子-质子碰撞中的带电粒子多重数

Charged-particle multiplicities in proton-proton collisions at $\sqrt{s}$ = 0.9 to 8 TeV

ALICE Collaboration

摘要:

利用ALICE探测器对质子-质子碰撞中产生的初级带电粒子的赝快度密度和多重数分布进行了详细的研究。质子-质子碰撞的能量为$\sqrt{s} =$ 0.9,2.36,2.76,7和8 TeV,赝快度范围为$|η|<2$。测量获得了三个事件类:非弹性,非单衍射和事件中至少有一个带电粒子的伪快度间隔$|η|<1$。与我们以前的出版物相比,使用改进的轨道计数算法结合ALICE的衍射过程的测量允许更高的精度。在伪快度间隔$|η|<$ 0.5、1.0和1.5中进行了KNO标度研究。的数据进行比较,其他实验结果和模型中实施的Monte Carlo事件发生器PHOJET和最近的曲调PYTHIA 6,PYTHIA 8和EPOS。

英文摘要:

A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles produced in proton-proton collisions, at $\sqrt{s} =$ 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range $|η|<2$, was carried out using the ALICE detector. Measurements were obtained for three event classes: inelastic, non-single diffractive and events with at least one charged particle in the pseudorapidity interval $|η|<1$. The use of an improved track-counting algorithm combined with ALICE's measurements of diffractive processes allows a higher precision compared to our previous publications. A KNO scaling study was performed in the pseudorapidity intervals $|η|<$ 0.5, 1.0 and 1.5. The data are compared to other experimental results and to models as implemented in Monte Carlo event generators PHOJET and recent tunes of PYTHIA6, PYTHIA8 and EPOS.

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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