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Collective Dynamics of Heavy Ion Collisions in ATLAS

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Abstract

An overview of the latest ATLAS measurements of collective behaviour in a variety of collision systems, including 13 TeV \(pp\), 5.44 TeV Xe + Xe and 5.02 TeV Pb + Pb collisions is presented. The results shown include measurements of \({{v}_{n}}\)-mean pT correlations and longitudinal flow decorrelations in Xe + Xe and Pb + Pb collisions, which carry important information about the initial-state geometry of the Quark-Gluon Plasma; heavy flavour flow harmonics testing the quark energy loss mechanism in QGP; and measurements of the sensitivity of collective behaviour in \(pp\) collisions to the presence of jets, which provide insight on the role of semi-hard processes in the origin of the flow phenomena in small systems. These results provide stringent tests of the theoretical understanding of the initial state in heavy ion collisions.

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Funding

This work was supported in part by the PL-Grid Infrastructure.

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  1. (on behalf of the ATLAS Collaboration)

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  1. Institute of Nuclear Physics Polish Academy of Sciences, 31-342, Kraków, Poland

    A. Trzupek

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  1. A. Trzupek
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Correspondence to A. Trzupek.

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Copyright [2018] CERN for the benefit of the [ATLAS Collaboration]. CC-BY-4.0 license.

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Trzupek, A. Collective Dynamics of Heavy Ion Collisions in ATLAS. Phys. Part. Nuclei 54, 703–707 (2023). https://doi.org/10.1134/S1063779623040330

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