Measurement of event-plane correlations in √sNN = 2.76 TeV lead-lead collisions with the ATLAS detector

ATLAS Collaboration

研究成果: Article査読

140 被引用数 (Scopus)

抄録

A measurement of event-plane correlations involving two or three event planes of different order is presented as a function of centrality for 7 μb-1 Pb+Pb collision data at sNN=2.76 TeV, recorded by the ATLAS experiment at the Large Hadron Collider. Fourteen correlators are measured using a standard event-plane method and a scalar-product method, and the latter method is found to give a systematically larger correlation signal. Several different trends in the centrality dependence of these correlators are observed. These trends are not reproduced by predictions based on the Glauber model, which includes only the correlations from the collision geometry in the initial state. Calculations that include the final-state collective dynamics are able to describe qualitatively, and in some cases also quantitatively, the centrality dependence of the measured correlators. These observations suggest that both the fluctuations in the initial geometry and the nonlinear mixing between different harmonics in the final state are important for creating these correlations in momentum space.

本文言語English
論文番号024905
ジャーナルPhysical Review C - Nuclear Physics
90
2
DOI
出版ステータスPublished - 2014 8 12

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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