Related paper Measurement of jet suppression in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV Ratio of the jet spectrum with a leading track $p_{\mathrm{T}} > 5$ GeV/$c$ over the inclusive jet spectrum for $R=0.2$ in pp collisions at $\sqrt{s}=2.76$ TeV.[png] [eps]