The $p_{\rm{T}}/n_q$ dependence of the double ratio of $v_2/n_q$ for $\pi^{\pm}$, $\mathrm{K}$ relative to a fit to $v_2/n_q$ of p and $\overline{\mathrm{p}}$ (see text for details) in Pb--Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV. The LHC points are compared with the results from Au-Au collisions at $\sqrt{s_\mathrm{{NN}}} = 0.2$ TeV from . |