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arXiv 1401.4306hep-exnucl-ex
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由ALICE在LHC测量pp碰撞中的角相关

Angular correlations measured in pp collisions by ALICE at the LHC

Łukasz Kamil Graczykowski, Małgorzata Anna Janik

摘要:

我们报告的研究未触发的两粒子角相关的识别粒子(π介子,K介子和质子)测量质子-质子碰撞的质心能量sqrt{s}=7 TeV的ALICE记录在大型强子对撞机。这些类型的研究对不同物理机制产生的广泛相关性很敏感,每个相关性在DeltaEta-DeltaPhi空间中都有独特的结构。具有不同夸克含量和味的粒子的关联对各种守恒律都很敏感。对这些相关性的研究是本分析的主要目标。结果证实,这些法律强烈影响的关联函数的形状为不同的粒子类型,必须考虑到,同时分析数据。此外,我们使用两个Monte Carlo事件发生器验证了它们的实现,我们发现,分析的模型不重现质子的测量相关性。

英文摘要:

We report on studies of untriggered two-particle angular correlations of identified particles (pions, kaons and protons) measured in proton-proton collisions at center-of-mass energy sqrt{s}=7 TeV recorded by ALICE at the LHC. These type of studies are sensitive to a wide range of correlations which arise from different physics mechanisms, each of them having a unique structure in DeltaEta-DeltaPhi space. The correlations of particles with different quark content and flavor are sensitive to various conservation laws. The study of these correlations is the main goal of this analysis. The results confirm that these laws strongly influence the shape of the correlation functions for different particle types and must be taken into account while analysing the data. Moreover, we verify their implementation using two Monte Carlo event generators and we found that the analyzed models do not reproduce the measured correlations for protons.

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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