
$v_4\{2\}/v_4[2]$ at $\sqrt{s_{NN}} = 5.02$ TeV with $|\Delta\eta| > 0.8$. The errors bars correspond to statistical uncertainties while the shaded color bands correspond to systematic uncertainties. Hydrodynamc calculations with TRENTo and AMPT initial conditions are shown in magenta and yellow.
Keywords: Flow, Flow vector fluctuations, pT-dependent flow vector fluctuations, Pb-Pb collisions, 5.02 TeV
The ratio of v4{2} and v4[2] to probe pT-dependent flow vector fluctuations in Pb-Pb collisions. v2{2} has contribution from pT-dependent flow vector fluctuations as well as non-flow, whereas v2[2] only has contribution from non-flow.
Data sample: LHC15o
Events cuts: kInt7 trigger, |Vz| < 10cm, V0M centrality estimator, Pileup cut,
Track cuts: Filterbit 96, No. of TPC cluster > 70, NUA weights, Reference pT [0.2,5.0], |eta| < 0.8