Systematic study of flow vector fluctuations in √sNN=5.02 TeV Pb-Pb collisions

• Titel: Systematic study of flow vector fluctuations in √sNN=5.02 TeV Pb-Pb collisions
• Mitwirkende: Acharya, Shreyasi [VerfasserIn]
• Mitwirkende: Angelov, Venelin [VerfasserIn]
• Mitwirkende: Berdnikova, Anastasia [VerfasserIn]
• Mitwirkende: Bergmann, Luisa [VerfasserIn]
• Mitwirkende: Crkovská, Jana [VerfasserIn]
• Mitwirkende: Danisch, Meike [VerfasserIn]
• Mitwirkende: Feuillard, Victor [VerfasserIn]
• Mitwirkende: Fokin, Ilya D. [VerfasserIn]
• Mitwirkende: Glässel, Peter [VerfasserIn]
• Mitwirkende: Grünwald, Nadine [VerfasserIn]
• Mitwirkende: Nath, Abhishek [VerfasserIn]
• Mitwirkende: Pachmayer, Yvonne C. [VerfasserIn]
• Mitwirkende: Reygers, Klaus [VerfasserIn]
• Mitwirkende: Schicker, Rainer [VerfasserIn]
• Mitwirkende: Schlepper, Felix [VerfasserIn]
• Mitwirkende: Seo, Jinjoo [VerfasserIn]
• Mitwirkende: Skorodumovs, Georgijs [VerfasserIn]
• Mitwirkende: Stachel, Johanna [VerfasserIn]
• Mitwirkende: Stiefelmaier, Stephan [VerfasserIn]
• Mitwirkende: Veen, Casper Arie van [VerfasserIn]
• Mitwirkende: Völkl, Martin [VerfasserIn]
• Mitwirkende: Windelband, Bernd [VerfasserIn]
• Mitwirkende: Yüncü, Alperen [VerfasserIn]
• Mitwirkende: Zanone, Federica [VerfasserIn]
• Körperschaft: ALICE (Körperschaft) [VerfasserIn]
• Verf.angabe: S. Acharya et al. (ALICE Collaboration*)
• E-Jahr: 2024
• Jahr: June 2024
• Umfang: 19 S.
• Illustrationen: Illustrationen
• Fussnoten: Veröffentlicht: 13. Juni 2024 ; Gesehen am 13.11.2024 ; *ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, J. Crkovská, M.C. Danisch, V.J.G. Feuillard, I. Fokin, P. Glässel, N.A. Grunwald, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, F. Schlepper, J.J. Seo, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. van Veen, M.A. Völkl, B. Windelband, A. Yuncu, I. Zanone [und 1043 weitere Personen] ; Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, NN ist dabei tiefgestellt
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2024
• Band/Heft Quelle: 109(2024), 6, Artikel-ID 065202, Seite 1-19
• ISSN Quelle: 2469-9993
• DOI: doi:10.1103/PhysRevC.109.065202
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1908410272

Abstract

Measurements of the ????T-dependent flow vector fluctuations in Pb-Pb collisions at √????NN=5.02TeV using azimuthal correlations with the ALICE experiment at the Large Hadron Collider are presented. A four-particle correlation approach [ALICE Collaboration, Phys. Rev. C 107, L051901 (2023)] is used to quantify the effects of flow angle and magnitude fluctuations separately. This paper extends previous studies to additional centrality intervals and provides measurements of the ????T-dependent flow vector fluctuations at √????NN=5.02TeV with two-particle correlations. Significant ????T-dependent fluctuations of the ⃗????2 flow vector in Pb-Pb collisions are found across different centrality ranges, with the largest fluctuations of up to ∼15% being present in the 5% most central collisions. In parallel, no evidence of significant ????T-dependent fluctuations of ⃗????3 or ⃗????4 is found. Additionally, evidence of flow angle and magnitude fluctuations is observed with more than 5⁢???? significance in central collisions. These observations in Pb-Pb collisions indicate where the classical picture of hydrodynamic modeling with a common symmetry plane breaks down. This has implications for hard probes at high ????T, which might be biased by ????T-dependent flow angle fluctuations of at least 23% in central collisions. Given the presented results, existing theoretical models should be reexamined to improve our understanding of initial conditions, quark-gluon plasma properties, and the dynamic evolution of the created system.