Measurements of mixed harmonic cumulants in Pb–Pb collisions at $\sqrt {s_{NN}}$ = 5.02 TeV

The collaboration
Phys.Lett.B 818 (2021) 136354, 2021.

Abstract (data abstract)
Correlations between moments of different flow coefficients are measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$~TeV recorded with the ALICE detector. Multiparticle mixed harmonic cumulants are calculated using charged particles in the pseudorapidity region $|\eta|<0.8$ with the transverse momentum range $0.2 < p_{\rm T} < 5.0$ GeV/$c$. The centrality dependence of correlations between two flow coefficients as well as the correlations between three flow coefficients, both in terms of their second moments, are shown. In addition, a collection of mixed harmonic cumulants involving higher moments of $v_2$ and $v_3$ is measured for the first time, where the characteristic signature of negative, positive and negative signs of four-, six- and eight-particle cumulants are observed, respectively.