Anisotropic flow fluctuations of charged and identified hadrons in Pb-Pb collisions with the ALICE detector

5 Nov 2019, 10:00
Ball Room 1 (Wanda Reign Wuhan Hotel)

Ball Room 1

Wanda Reign Wuhan Hotel

Oral Presentation Collective dynamics and final state interaction Parallel Session - Collective dynamics I


Ya Zhu for the ALICE Collaboration (Central China Normal University )


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.

Primary author

Ya Zhu for the ALICE Collaboration (Central China Normal University )

Presentation Materials