Recent Electroweak Results from ATLAS

ATLAS measurements of multi­-boson production processes involving combinations of W, Z and isolated photons are summarized. In processes like WW, ZZ, Zgamma or Wgamma large next­-to­-next­-to­-leading order QCD corrections were recently calculated and are confronted with integrated and differential data measurements. Furthermore a measurement of the differential cross section for the inclusive four­-lepton production as a function of the mass ranging from 80 to 1000 GeV is presented. Several distinct physics processes give rise to the production of 4-­lepton final state: the single Z resonant processes, the Higgs production at 125 GeV, as well as continuum ​ ZZ production processes with ​qq​ and gg initial states. Production processes sensitive to vector­ boson fusion and vector ­boson scattering such as electroweak production of single and double vector boson associated with two forward jets at 8 TeV pp collisions are also presented and compared to Standard Model expectations.