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arXiv 1606.01133hep-ex
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用LHC上的ATLAS探测器测量的$\sqrt{s}$ =13 TeV pp相互作用中低横动量的带电粒子分布

Charged-particle distributions at low transverse momentum in $\sqrt{s}$=13 TeV pp interactions measured with the ATLAS detector at the LHC

ATLAS Collaboration

摘要:

测量了质心能量为13 TeV的质子-质子碰撞中产生的带电粒子的分布。这些数据由大型强子对撞机上的ATLAS探测器记录,对应于151 $μ$ b $^{-1}$的积分亮度。要求粒子的横向动量大于100 MeV,绝对赝快度小于2.5。在至少含有两个满足上述运动学判据的带电粒子的事例中,测量了带电粒子多重数及其对横向动量和赝快度的依赖关系,以及平均横向动量对多重数的依赖关系。的结果进行了校正检测器的影响,并从几个Monte Carlo事件发生器的预测进行比较。

英文摘要:

Measurements of distributions of charged particles produced in proton-proton collisions with a centre-of-mass energy of 13 TeV are presented. The data were recorded by the ATLAS detector at the LHC and correspond to an integrated luminosity of 151 $μ$b$^{-1}$. The particles are required to have a transverse momentum greater than 100 MeV and an absolute pseudorapidity less than 2.5. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity and the dependence of the mean transverse momentum on multiplicity are measured in events containing at least two charged particles satisfying the above kinematic criteria. The results are corrected for detector effects and compared to the predictions from several Monte Carlo event generators.

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