Multi-strange baryon elliptic flow in Pb-Pb collisions at \sqrt{s_{NN}} = 2.76 TeV measured with the ALICE detector

TL;DR

This paper reports measurements of elliptic flow for multi-strange baryons in Pb-Pb collisions at 2.76 TeV, comparing experimental results with hydrodynamic models and previous measurements at lower energies.

Contribution

It provides new elliptic flow data for multi-strange baryons at LHC energies and compares these with model predictions and lower-energy results.

Findings

VISH2+1 model describes  and  v_2 within uncertainties

Differential flow of  and  similar to STAR at 200 GeV

Elliptic flow measurements extend understanding of QGP properties

Abstract

We present the results on elliptic flow with multi-strange baryons produced in Pb-Pb collisions at \sqrt{s_{NN}} = 2.76 TeV. The analysis is performed with the ALICE detector at LHC. Multi-strange baryons are reconstructed via their decay topologies and the v_2 values are analyzed with the two-particle scalar product method. The p_T differential v_2 values are compared to the VISH2+1 model calculation and to the STAR measurements at 200 GeV in Au+Au collisions. We found that the model describes \Xi and \Omega v_2 measurements within experimental uncertainties. The differential flow of \Xi and \Omega is similar to the STAR measurements at 200 GeV in Au+Au collisions.