Related paper Measurement of an excess in the yield of J/$ψ$ at very low $p_{\rm T}$ in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV Invariant mass distributions of OS dimuons in the $p_{\mathrm T}$ range 0-0.3 $\gevc$. The centrality classes are 0-10$\%$ (top) and 70-90$\%$ (bottom). Vertical error bars are the statistical uncertainties.[png] [eps]
