Abstract

ALICE measured transverse momentum spectra of π0 and η mesons via the two photon decay in pp collisions at sNN = 0.9, 2.76 and 7 TeV and Pb-Pb collisions at sNN = 2.76TeV. NLO pQCD calculations agree with pp measurements at 0.9 TeV, but overestimate the data at 2.76 and 7 TeV. The nuclear modification factor for neutral pions shows a strong suppression of high-pT particle production in central Pb-Pb collisions. Raw spectra of charged particle jets have been measured in Pb-Pb collisions. Detailed studies of background fluctuations have been performed and will allow us to unfold the spectra even for low momentum cut offs, giving access to soft fragmentation products in quenched jets.

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