Observation of flow angle and flow magnitude fluctuations in Pb-Pb collisions at √sNN=5.02TeV at the CERN Large Hadron Collider



Acharya, S, Adamová, D, Adler, A, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I
et al (show 1035 more authors) (2023) Observation of flow angle and flow magnitude fluctuations in Pb-Pb collisions at √sNN=5.02TeV at the CERN Large Hadron Collider. Physical Review C, 107 (5). l051901-.

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Abstract

This Letter reports on the first measurements of transverse momentum dependent flow angle ψn and flow magnitude vn fluctuations determined using new four-particle correlators. The measurements are performed for various centralities in Pb-Pb collisions at a center-of-mass energy per nucleon pair of sNN = 5.02 TeV with ALICE at the CERN Large Hadron Collider. Both flow angle and flow magnitude fluctuations are observed in the presented centrality ranges and are strongest in the most central collisions and for a transverse momentum pT>2GeV/c. Comparison with theoretical models, including iEBE-VISHNU, MUSIC, and AMPT, show that the measurements exhibit unique sensitivities to the initial state of heavy-ion collisions.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 03 Oct 2023 15:55
Last Modified: 20 Jun 2024 18:50
DOI: 10.1103/physrevc.107.l051901
Open Access URL: https://doi.org/10.1103/PhysRevC.107.L051901
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3173382