Issue |
EPJ Web Conf.
Volume 316, 2025
The 21st International Conference on Strangeness in Quark Matter (SQM 2024)
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|
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Article Number | 07006 | |
Number of page(s) | 4 | |
Section | Detector Upgrades, Future Experiments and Other Topics | |
DOI | https://doi.org/10.1051/epjconf/202531607006 | |
Published online | 27 January 2025 |
https://doi.org/10.1051/epjconf/202531607006
Probing Hydrodynamics in PbPb Collisions at 5.02 TeV with Higher-order Cumulants
Indian Institute of Technology Madras, Chennai, India
Published online: 27 January 2025
The elliptic flow of charged hadrons is studied through multiparticle correlations in PbPb collisions at √sNN = 5.02 TeV, corresponding to an integrated luminosity of 0.607 nb−1. v2 {2k} are measured up to the tenth order (k = 5) as functions of the collision centrality. They are shown to follow the ordering : v2{2} > v2{4} ≳ v2{6} ≳ v2{8} ≳ v2{10}. The centrality-dependent moments - skewness, kurtosis and, for the first time, superskewness, are measured for the fluctuation-driven event-by-event v2 distribution. These moments can be good probes of the initial-state geometry in high-energy nucleus-nucleus collisions, assuming a hydrodynamic expansion.
© The Authors, published by EDP Sciences, 2025
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