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The ATLAS experiment measures yields of isolated photons and of Z and Wbosons via leptonic decay modes in Pb+Pb collisions at sqrt(s_NN)=2.76 TeV. Thedata samples used in the analysis were obtained in the year 2010 and year 2011LHC runs and correspond to 5 ub-1 and 0.15 nb-1 of integrated luminosityrespectively. The measured yields of all bosons are consistent with the scalingproportional to the number of nucleon-nucleon collisions. The transversemomentum distributions are measured for isolated photons and for Z bosons fordifferent centrality bins. The shapes of measured distributions do not changewith centrality. The transverse momentum and rapidity distributions of Z bosonare consistent in shape with Pythia model and the second harmonic coefficientof the azimuthal distribution of Z bosons with respect to the event plane isconsistent with zero.

Measurement of the W, Z and photon production in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector