Higher-order correlations between different moments of two flow amplitudes in Pb-Pb collisions at √sNN=5.02 TeV



Acharya, S, Adamova, D, Adler, A, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I
et al (show 1031 more authors) (2023) Higher-order correlations between different moments of two flow amplitudes in Pb-Pb collisions at √sNN=5.02 TeV PHYSICAL REVIEW C, 108 (5). 055203-. ISSN 2469-9985, 2469-9993

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Abstract

The correlations between different moments of two flow amplitudes, extracted with the recently developed asymmetric cumulants, are measured in Pb-Pb collisions at sNN=5.02TeV recorded by the ALICE detector at the CERN Large Hadron Collider. The magnitudes of the measured observables show a dependence on the different moments as well as on the collision centrality, indicating the presence of nonlinear response in all even moments up to the eighth. Furthermore, the higher-order asymmetric cumulants show different signatures than the symmetric and lower-order asymmetric cumulants. Comparisons with state-of-the-art event generators using two different parametrizations obtained from Bayesian optimization show differences between data and simulations in many of the studied observables, indicating a need for further tuning of the models behind those event generators. These results provide new and independent constraints on the initial conditions and transport properties of the system created in heavy-ion collisions.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 12 Aug 2024 14:57
Last Modified: 23 May 2026 08:12
DOI: 10.1103/PhysRevC.108.055203
Open Access URL: https://doi.org/10.1103/PhysRevC.108.055203
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3183601
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