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

Abstract
The correlations between different moments of two flow amplitudes, extracted with the recently developed asymmetric cumulants, are measured in Pb-Pb collisions at root sNN = 5.02 TeV 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.
Main Author
Format
Articles Research article
Published
2023
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202406124550Use this for linking
Review status
Peer reviewed
ISSN
2469-9985
DOI
https://doi.org/10.1103/PhysRevC.108.055203
Language
English
Published in
Physical Review C
Citation
  • ALICE collaboration. (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), Article 055203. https://doi.org/10.1103/PhysRevC.108.055203
License
CC BY 4.0Open Access
Funder(s)
Research Council of Finland
European Commission
Research Council of Finland
Funding program(s)
Centre of Excellence, AoF
RIA Research and Innovation Action, H2020
Centre of Excellence, AoF
Huippuyksikkörahoitus, SA
RIA Research and Innovation Action, H2020
Huippuyksikkörahoitus, SA
Research Council of FinlandEuropean Commission
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Education and Culture Executive Agency (EACEA). Neither the European Union nor EACEA can be held responsible for them.
Additional information about funding
In addition, individual groups or members have received support from European Research Council, Strong 2020-Horizon 2020 (Grants No. 950692 and No. 824093), European Union; Academy of Finland (Center of Excellence in Quark Matter) (Grants No. 346327 and No. 346328), Finland; and Programa de Apoyos para la Superación del Personal Académico, UNAM, Mexico.
Copyright© 2024 CERN

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