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arXiv 1812.04095hep-ex
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在$\sqrt{s} =$ 13 TeV质子-质子碰撞中作为赝快度函数的能量密度的测量

Measurement of the energy density as a function of pseudorapidity in proton-proton collisions at $\sqrt{s} =$ 13 TeV

CMS Collaboration

摘要:

测量了质心能量为$\sqrt{s} =$ 13 TeV的质子-质子碰撞的能量密度。这些数据是在2015年LHC低光度操作期间用CMS实验记录的。在$-$ 6.6 $< η$ $< -$ 5.2和3.15 $< |η| <$ 5.20范围内研究了作为赝快度函数的能量密度。结果与几个模型的预测进行了比较。所有考虑的模型表明不同的形状的伪快度的依赖相比,在数据中观察到的。在$\sqrt{s} =$ 0.9和7 TeV的LHC质子-质子碰撞数据的比较证实了数据的兼容性与限制碎裂的假设。

英文摘要:

A measurement of the energy density in proton-proton collisions at a centre-of-mass energy of $\sqrt{s} =$ 13 TeV is presented. The data have been recorded with the CMS experiment at the LHC during low luminosity operations in 2015. The energy density is studied as a function of pseudorapidity in the ranges $-$6.6 $< η$ $< -$5.2 and 3.15 $< |η| <$ 5.20. The results are compared with the predictions of several models. All the models considered suggest a different shape of the pseudorapidity dependence compared to that observed in the data. A comparison with LHC proton-proton collision data at $\sqrt{s} =$ 0.9 and 7 TeV confirms the compatibility of the data with the hypothesis of limiting fragmentation.

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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