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Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE

<!--HTML-->Heavy-ion collisions at ultra-relativistic energies at the LHC provide a unique opportunity to study the strongly interacting quark-gluon plasma (QGP). Anisotropic flow phenomena provide valuable information on the initial conditions of heavy-ion collisions, the transport coefficien...

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Autor principal: Nielsen, Emil Gorm
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:http://cds.cern.ch/record/2749448
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author Nielsen, Emil Gorm
author_facet Nielsen, Emil Gorm
author_sort Nielsen, Emil Gorm
collection CERN
description <!--HTML-->Heavy-ion collisions at ultra-relativistic energies at the LHC provide a unique opportunity to study the strongly interacting quark-gluon plasma (QGP). Anisotropic flow phenomena provide valuable information on the initial conditions of heavy-ion collisions, the transport coefficients, and the dynamic evolution of the created QGP. In this talk, we present investigations of the transverse-momentum dependent flow vector fluctuations in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV. Using newly proposed multiparticle correlations, for the first time we separate the potential contributions from flow angle and flow magnitude fluctuations and report the first evidence of both effects in Pb–Pb collisions. In addition, we discuss how to use event shape engineering (ESE) techniques to select the initial conditions and change the event-by-event $v_n$ distribution. Furthermore, we show a novel approach to study the correlations between different order coefficients $v_n$ and $v_m$, as well as the nonlinear flow modes, using the ESE technique. Together with the comparisons to the state-of-the-art hydrodynamic calculations, we can significantly improve the understanding of the initial conditions and the dynamic evolution of the created systems in heavy-ion collisions at the LHC.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
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spelling cern-27494482022-11-02T22:26:19Zhttp://cds.cern.ch/record/2749448engNielsen, Emil GormFluctuations and correlations of flow in heavy-ion collisions measured by ALICEInitial Stages 2021Conferences<!--HTML-->Heavy-ion collisions at ultra-relativistic energies at the LHC provide a unique opportunity to study the strongly interacting quark-gluon plasma (QGP). Anisotropic flow phenomena provide valuable information on the initial conditions of heavy-ion collisions, the transport coefficients, and the dynamic evolution of the created QGP. In this talk, we present investigations of the transverse-momentum dependent flow vector fluctuations in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV. Using newly proposed multiparticle correlations, for the first time we separate the potential contributions from flow angle and flow magnitude fluctuations and report the first evidence of both effects in Pb–Pb collisions. In addition, we discuss how to use event shape engineering (ESE) techniques to select the initial conditions and change the event-by-event $v_n$ distribution. Furthermore, we show a novel approach to study the correlations between different order coefficients $v_n$ and $v_m$, as well as the nonlinear flow modes, using the ESE technique. Together with the comparisons to the state-of-the-art hydrodynamic calculations, we can significantly improve the understanding of the initial conditions and the dynamic evolution of the created systems in heavy-ion collisions at the LHC.oai:cds.cern.ch:27494482021
spellingShingle Conferences
Nielsen, Emil Gorm
Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
title Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
title_full Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
title_fullStr Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
title_full_unstemmed Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
title_short Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
title_sort fluctuations and correlations of flow in heavy-ion collisions measured by alice
topic Conferences
url http://cds.cern.ch/record/2749448
work_keys_str_mv AT nielsenemilgorm fluctuationsandcorrelationsofflowinheavyioncollisionsmeasuredbyalice
AT nielsenemilgorm initialstages2021