Figure 1

Charged pion and proton $v_2$ as a function of transverse momentum for various centrality classes from the event plane method. For clarity, the markers for proton results are slightly shifted along the horizontal axis. Error bars (shaded boxes) represent the statistical (systematic) uncertainties. For details, please see Phys. Lett. B 719, 18 (2013), arXiv:1205.5761.