Elliptic and triangular flow of identified particles at ALICE

TL;DR

This paper presents the first measurements of elliptic and triangular flow for identified particles in lead-lead collisions at the LHC, comparing results with lower-energy data and theoretical models to understand particle behavior.

Contribution

It provides new experimental data on flow for identified particles at LHC energies and tests the quark coalescence model through flow scaling analysis.

Findings

Mass splitting of elliptic flow observed at LHC

Quark number scaling of flow tested and analyzed

Comparison with lower-energy RHIC data and theory predictions

Abstract

We report on the first measurements of elliptic and triangular flow for charged pions, kaons and anti-protons in lead-lead collisions at 2.76 TeV measured with the ALICE detector at the LHC. We compare the observed mass splitting of differential elliptic flow at LHC energies to RHIC measurements at lower energies and theory predictions. We test the quark coalescence picture with the quark number scaling of elliptic and triangular flow.