Higher-order correlations between different moments of two flow amplitudes in Pb-Pb collisions at √s.sub.NN./sub.=5.02 TeV

0582296 - ÚJF 2024 RIV US eng J - Článek v odborném periodiku
Acharya, S. - Adamová, Dagmar - Adler, A. - Aglieri Rinella, G. - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Filová, V. - Grecká, Ekaterina - Grund, D. - Herman, T. - Isakov, Artem - Kotliarov, Artem - Krupová, D. M. - Křížek, Filip - Kushpil, Svetlana - Šafařík, K. - Torres, S. R. - Závada, Petr … celkem 1041 autorů
Higher-order correlations between different moments of two flow amplitudes in Pb-Pb collisions at √s_NN=5.02 TeV.
Physical Review C. Roč. 108, č. 5 (2023), č. článku 055203. ISSN 2469-9985. E-ISSN 2469-9993
Výzkumná infrastruktura: CERN-CZ III - 90240
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: ALICE collaboration * heavy ion collisions * hadron-hadron interactions
Obor OECD: Nuclear physics; Particles and field physics (FZU-D)
Impakt faktor: 3.1, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1103/PhysRevC.108.055203

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.
Trvalý link: https://hdl.handle.net/11104/0350397