Measurements of W Boson Yields in Pb+Pb at 2.76 TeV/nucleon via single muons with the ATLAS detector

We report on the first measurements of W boson production in lead-lead collisions measured by the ATLAS detector at the nucleon-nucleon centre of mass energy √sNN = 2.76 TeV. These measurements are done via the muon decay of W bosons. We present a measurement of W bosons yields produced in heavy ion collisions as function of centrality, ratios of W+/W− and W/Z. For a subset of the W → μν decays, we report on muon rapidity and charge asymmetry measurements. These measurements are the first ATLAS results on W measurements in lead-lead collisions at the LHC.