We present the elliptic flow $v_{ 2}$ of electrons from the semi-leptonic decays of heavy-flavour hadrons at mid-rapidity for semi-central ($20-40%$ centrality) Pb-Pb collisions at $\sqrt{ s_\mathrm{ NN}}$ = 2.76 TeV measured with the ALICE detector. A positive $v_{ 2}$ is observed at low $p_\mathrm{ T}$ in semi-central collisions. Comparisons with previous measurements obtained at lower collision energy at RHIC in Au-Au collisions at $\sqrt{ s_\mathrm{ NN}}$ = 0.2 TeV and with theoretical models are also presented.
Categories: hep-ex nucl-ex