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Correlated Event-by-Event Fluctuations of Flow Harmonics in Pb-Pb Collisions at root S-NN=2.76 TeV
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SYSNO ASEP 0471133 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Correlated Event-by-Event Fluctuations of Flow Harmonics in Pb-Pb Collisions at root S-NN=2.76 TeV Author(s) Adam, J. (CZ)
Adamová, Dagmar (UJF-V) RID, ORCID, SAI
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Broz, M. (CZ)
Čepila, J. (CZ)
Contreras, J. G. (CZ)
Eyyubova, G. (CZ)
Ferencei, Jozef (UJF-V) RID
Horák, D. (CZ)
Křížek, Filip (UJF-V) RID, ORCID, SAI
Kučera, Vít (UJF-V) RID
Mareš, Jiří A. (FZU-D) RID, ORCID
Petráček, V. (CZ)
Pospíšil, Jan (UJF-V)
Schulc, M. (CZ)
Špaček, M. (CZ)
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Vaňát, Tomáš (UJF-V) ORCID, SAI
Závada, Petr (FZU-D) RID, ORCIDNumber of authors 1000 Article number 182301 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 117, č. 18 (2016)Number of pages 14 s. Publication form Print - P Language eng - English Country US - United States Keywords ALICE collaboration ; heavy ion collisions ; mass energy Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders Subject RIV - cooperation Institute of Physics - Elementary Particles and High Energy Physics R&D Projects LG13031 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 ; UJF-V - RVO:61389005 UT WOS 000411135400004 EID SCOPUS 84994607983 DOI https://doi.org/10.1103/PhysRevLett.117.182301 Annotation We report the measurements of correlations between event-by-event fluctuations of amplitudes of anisotropic flow harmonics in nucleus-nucleus collisions, obtained for the first time using a new analysis method based on multiparticle cumulants in mixed harmonics. This novel method is robust against systematic biases originating from nonflow effects and by construction any dependence on symmetry planes is eliminated. We demonstrate that correlations of flow harmonics exhibit a better sensitivity to medium properties than the individual flow harmonics. The new measurements are performed in Pb-Pb collisions at the center-of-mass energy per nucleon pair of root S-NN = 2.76 TeV by the ALICE experiment at the Large Hadron Collider. The centrality dependence of correlation between event-by-event fluctuations of the elliptic upsilon 2 and quadrangular upsilon 4 flow harmonics, as well as of anticorrelation between upsilon 2 and triangular upsilon 3 flow harmonics are presented. The results cover two different regimes of the initial state configurations: geometry dominated (in midcentral collisions) and fluctuation dominated (in the most central collisions). Comparisons are made to predictions from Monte Carlo Glauber, viscous hydrodynamics, AMPT, and HIJING models. Together with the existing measurements of the individual flow harmonics the presented results provide further constraints on the initial conditions and the transport properties of the system produced in heavy-ion collisions. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2017
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