Speaker
Description
Anisotropic flow fluctuations can be used to probe the properties and evolution of the system created in heavy-ion collisions. In this talk, we present the first $p_{\rm T}$-differential measurements of the first and second order moments of $v_{\rm 2}$ probability density function (PDF), extracted from a comprehensive set of light-flavor hadrons. In addition, we also present higher order moments, skewness and kurtosis, as a function of $p_{\rm T}$ and centrality for unidentified charged hadrons. Finally, we discuss the $p_{\rm T}$-differential measurements of charged hadrons' $v_{\rm 2}$ with 2-, 4-, 6- and 8-particle cumulants in context of the underlying PDF.
We report the measurements of $\pi^{\pm}$, ${\rm K}^{\pm}$, ${\rm p + \bar{p}}$, $\rm \Lambda + \bar{\Lambda}$, $\rm \Xi^{\pm}$, $\rm \Omega^{\pm}$, $\rm \phi$ and inclusive charged hadrons $v_{\rm n}$ fluctuations, measured in Pb-Pb collisions at $\sqrt{s}_{\rm NN}=5.02{\rm TeV}$ using multi-particle cumulants with the ALICE detector. Measurements are performed in central pseudorapidity region $|\eta|<0.8$ and cover a wide transverse momentum range. The implications of our results for understanding of the properties of the medium will be discussed.
