Anisotropic flow of identified particles in Pb-Pb collisions at \sqrt{s_{NN}} = 2.76 TeV measured with ALICE at the LHC

TL;DR

This paper presents measurements of elliptic and triangular flow for various identified particles in Pb-Pb collisions at 2.76 TeV, analyzing mass splitting, quark number scaling, and comparing results to RHIC data and hydrodynamic models.

Contribution

It provides detailed flow measurements for multiple particle species at LHC energies, extending understanding of anisotropic flow and particle production mechanisms.

Findings

Mass splitting observed in elliptic flow.

Scaling of flow with number of constituent quarks.

Comparison shows consistency with hydrodynamic models.

Abstract

We report on the elliptic and triangular flow measurements for a number of hadrons including charged pions, and (anti-)protons, as well as those with strangeness content: kaons, ${\rm \phi}$-meson, ${\rm K^0_s}$, ${\rm \Lambda/\bar{\Lambda}}$, ${\rm \Xi}$, and ${\rm \Omega}$. The results reported cover mid--rapidity, $|\eta|<0.8$, and a wide, $0.2 < p_{\rm T} < 16$ GeV/$c$, transverse momentum range for Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV recorded by ALICE at the LHC. The mass splitting and the scaling properties of the elliptic flow with the number of constituent quarks and the particle transverse mass are studied as a function of collision centrality. The results are ompared to RHIC measurements and to hydrodynamic model predictions.