Related paper Measurement of event background fluctuations for charged particle jet reconstruction in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV $\delta{\pt}$ distribution of charged particles for jet reconstruction with the three methods in the 10% most central Pb-Pb events for ${p_{\rm t}^{\rm min}}$= 0.15GeV/c, 1GeV/c, and 2GeV/c [png] [eps]