We present the analysis of the semi-inclusive distribution of reconstructed charged particle jets recoiling from a high pr hadron trigger in central Pb-Pb collisions at root s(NN) = 2.76 TeV. We measure, subtract and unfold the large underlying event background in such collisions, utilizing a novel technique that does not impose fragmentation bias on the measured jet population. The Pb-Pb measurements are compared to a pp PYTHIA reference distribution generated at the same root s. Modification of the jet structure due to quenching is explored by varying the cone radius R (0.2, 0.4) and the lower pi, cutoff of the charged particle constituents (0.15, 2.0 GeV/c).