Speaker
Description
Measurements of anisotropic flow provide an important insight into the nature of collectively expanding hot and dense strongly coupled matter in heavy-ion collisions. Over the past years, striking similarities were revealed in numerous experimental results measured in high-multiplicity proton-proton and proton-lead interactions, where no emergence of such a medium was expected.
In this talk, we will present the latest ALICE measurement of flow coefficients and their correlations using Symmetric Cumulants for charged particles with data collected during the LHC Run 2 program in pp collisions at $\sqrt{s} = 13$ TeV, p--Pb at $\sqrt{s_{\rm{NN}}} = 5.02$ TeV, Xe--Xe at $\sqrt{s_{\rm{NN}}} = 5.44$ TeV and Pb--Pb collisions at $\sqrt{s_{\rm{NN}}} = 5.02$ TeV. In addition, we will present the flow coefficients of identified particles in p--Pb collisions. Such broad spectrum of colliding systems with different energies and a wide range of multiplicity allows for a detailed investigation of their collision dynamics. Non-flow effects, which are azimuthal correlations not originating from a common symmetry plane, are suppressed with the subevent method requiring a separation in pseudorapidity and with the subtraction method. The results are compared to various theoretical models, which provide important insights into initial conditions and into the nature of collective phenomena in different collision systems.
