Please use this identifier to cite or link to this item: http://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.
Abud, A.
Abeling, K.
Abhayasinghe, D.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.
Achkar, B.
Adachi, S.
Adam, L.
Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
et al.
Citation: European Physical Journal C, 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
RMID: 1000011200
DOI: 10.1140/epjc/s10052-019-7489-6
Appears in Collections:Physics publications

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