Direct photon measurement in Pb-Pb collisions at sNN=2.76Â TeV with ALICE

The ALICE experiment has measured the direct photon spectra in Pb-Pb collisions at sNN=2.76 TeV for three different centrality selections. The measurement was performed emplying a method utilizing conversion of photons into e+e− pairs in the detector material, and a method using the PHOS calorimeter. The two measurements were combined in order to measure direct photons over a broad transverse momentum range of 0.9