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

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...

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Autor principal: Aad, G.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562813_v90_n2_p_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05562813_v90_n2_p_Aad
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spelling todo:paper_05562813_v90_n2_p_Aad2023-10-03T15:35:08Z Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector Aad, G. 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. © 2014 CERN, for the ATLAS Collaboration. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562813_v90_n2_p_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description 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. © 2014 CERN, for the ATLAS Collaboration.
format JOUR
author Aad, G.
spellingShingle Aad, G.
Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector
author_facet Aad, G.
author_sort Aad, G.
title Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector
title_short Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector
title_full Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector
title_fullStr Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector
title_full_unstemmed Measurement of event-plane correlations in √s NN = 2.76 TeV lead-lead collisions with the ATLAS detector
title_sort measurement of event-plane correlations in √s nn = 2.76 tev lead-lead collisions with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_05562813_v90_n2_p_Aad
work_keys_str_mv AT aadg measurementofeventplanecorrelationsinsnn276tevleadleadcollisionswiththeatlasdetector
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