Figure 18

The $p_{\rm{T}}$-differential ${v}_2$ for $\mathrm{K}$, $\phi$, and $\mathrm{\Xi^-}$+$\overline{\mathrm{\Xi}}^+$ in (a) measured with the scalar product method with a minimum pseudorapidity gap $|\Delta\eta| > 0.9$ for the 10-20$\%$ centrality interval of Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV, compared to theoretical, hydrodynamical calculations coupled to a hadronic cascade model . Panel (b) shows the dependence of the ratio of the experimental points to a fit over the theoretical calculations as a function of $p_{\rm{T}}$.