Related paper Neutral pion and $η$ meson production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV Comparison of the \etapai ratio in the centrality class 0--10\% (circles) to the NLO pQCD prediction by DCZW (solid band) and to the EQ and NEQ SHM and EPOS predictions for the input yields (bold and thin dashed lines respectively).[png] [pdf] [eps]