Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Measurements of anisotropic flow and flow fluctuations in Xe-Xe and Pb-Pb collisions with ALICE

15 May 2018, 09:00
20m
Sala Mosaici-1, 3rd Floor (Palazzo del Casinò)

Sala Mosaici-1, 3rd Floor

Palazzo del Casinò

Parallel Talk Collective dynamics

Speaker

Jacopo Margutti (Utrecht University (NL))

Description

Anisotropic flow is a key observable to characterize the system created in heavy-ion collisions, as it is sensitive to its initial state, transport properties, the equation of state and freeze-out conditions. In this presentation, we present the anisotropic flow coefficients of inclusive charged particles in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 and 5.02 TeV, and Xe-Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV. The results are reported for a wide range of particle transverse momenta within the pseudo-rapidity range $|\eta| < 0.8$ at different collision centralities. The energy and system dependence are found to place strong constraints on the temperature dependence of $\eta/s$ and the modeling of the initial state respectively. We also present detailed studies of flow fluctuations in heavy-ion collisions, in order to precisely characterize the underlying flow probability distribution function. We find evidence of non-Bessel-Gaussian fluctuations and we discuss the origin of this observation.

Collaboration ALICE Experiment Presenter name already specified