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https://hdl.handle.net/2440/123472
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Type: | Journal article |
Title: | Measurement of flow harmonics correlations with mean transverse momentum in lead–lead and proton–lead collisions at √sNN = 5.02 TeV with the ATLAS detector |
Other Titles: | Measurement of flow harmonics correlations with mean transverse momentum in lead-lead and proton-lead collisions at root sNN = 5.02 TeV with the ATLAS detector |
Author: | Aad, G. Abbott, B. Abbott, D.C. Abud, A.A. Abeling, K. Abhayasinghe, D.K. Abidi, S.H. AbouZeid, O.S. Abraham, N.L. Abramowicz, H. Abreu, H. Abulaiti, Y. Acharya, B.S. Achkar, B. Adachi, S. Adam, L. Bourdarios, C.A. Adamczyk, L. Adamek, L. Adelman, J. et al. |
Citation: | European Physical Journal C: Particles and Fields, 2019; 79(12):985-1-985-29 |
Publisher: | Springer Nature |
Issue Date: | 2019 |
ISSN: | 1434-6044 1434-6052 |
Statement of Responsibility: | G. Aad ... D. Duvnjak ... P. Jackson ... A. Petridis ... M.J. White ... et al. [The ATLAS Collaboration] |
Abstract: | To assess the properties of the quark–gluon plasma formed in ultrarelativistic ion collisions, the ATLAS experiment at the LHC measures a correlation between the mean transverse momentum and the flow harmonics. The analysis uses data samples of lead–lead and proton–lead collisions obtained at the centre-of-mass energy per nucleon pair of 5.02 TeV, corresponding to total integrated luminosities of 22 μb⁻¹ and 28 nb⁻¹, respectively. The measurement is performed using a modified Pearson correlation coefficient with the charged-particle tracks on an event-by-event basis. The modified Pearson correlation coefficients for the 2nd-, 3rd-, and 4th-order flow harmonics are measured in the lead–lead collisions as a function of event centrality quantified as the number of charged particles or the number of nucleons participating in the collision. The measurements are performed for several intervals of the charged-particle transverse momentum. The correlation coefficients for all studied harmonics exhibit a strong centrality evolution, which only weakly depends on the charged-particle momentum range. In the proton–lead collisions, the modified Pearson correlation coefficient measured for the 2nd-order flow harmonics shows only weak centrality dependence. The lead-lead data is qualitatively described by the predictions based on the hydrodynamical model. |
Rights: | © CERN for the benefit of the ATLAS collaboration 2019. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP³ |
DOI: | 10.1140/epjc/s10052-019-7489-6 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1140/epjc/s10052-019-7489-6 |
Appears in Collections: | Aurora harvest 4 Physics publications |
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hdl_123472.pdf | Published Version | 1.11 MB | Adobe PDF | View/Open |
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