TY  - CHART
AU  - ALICE Collaboration
TI  - Characterizing the initial conditions of heavy-ion collisions at the LHC with mean transverse momentum and anisotropic flow correlations
M1  - GSI-2023-00177
PY  - 2022
N1  - Journal Article GSI record: GSI-2023-00116
AB  - Correlations between mean transverse momentum [p<sub>T</sub>] and anisotropic flow coefficients v<sub>2</sub> or v<sub>3</sub> are measured as a function of centrality in Pb-Pb and Xe-Xe collisions at √{s<sub>NN</sub>} = 5.02 TeV and 5.44 TeV, respectively, with ALICE. In addition, the recently proposed higher-order correlation between [p<sub>T</sub>], v<sub>2</sub>, and v<sub>3</sub> is measured for the first time, which shows an anticorrelation for the presented centrality ranges. These measurements are compared with hydrodynamic calculations using IP-Glasma and T<sub>R</sub>ENTo initial-state shapes, the former based on the Color Glass Condensate effective theory with gluon saturation, and the latter a parameterized model with nucleons as the relevant degrees of freedom. The data are better described by the IP-Glasma rather than the T<sub>R</sub>ENTo based calculations. In particular, Trajectum and JETSCAPE predictions, both based on the T<sub>R</sub>ENTo initial state model but with different parameter settings, fail to describe the measurements. As the correlations between [p<sub>T</sub>] and v<sub>n</sub> are mainly driven by the correlations of the size and the shape of the system in the initial state, these new studies pave a novel way to characterize the initial state in relativistic heavy-ion collisions.
LB  - PUB:(DE-HGF)32
DO  - DOI:10.17182/HEPDATA.133026
UR  - https://repository.gsi.de/record/250976
ER  -