Related paper Jet-like correlations with neutral pion triggers in pp and central Pb-Pb collisions at 2.76 TeV Charged-particle associated yields relative to $\pi^{0}$ trigger particles versus $\dphi$ in 0-10% most central Pb-Pb collisions at $\snn=2.76$ TeV. See caption of Fig.2 for more information.[png] [pdf]