  A study of WZ production in proton-proton collisions at sqrt(s) = 7 TeV is
presented using data corresponding to an integrated luminosity of 4.6 fb^-1
collected with the ATLAS detector at the Large Hadron Collider in 2011. In
total, 317 candidates, with a background expectation of 68+/-10 events, are
observed in double-leptonic decay final states with electrons, muons and
missing transverse momentum. The total cross-section is determined to be
sigma_WZ(tot) = 19.0+1.4/-1.3(stat.)+/-0.9(syst.)+/-0.4(lumi.) pb, consistent
with the Standard Model expectation of 17.6+1.1/-1.0 pb. Limits on anomalous
triple gauge boson couplings are derived using the transverse momentum spectrum
of Z bosons in the selected events. The cross section is also presented as a
function of Z boson transverse momentum and diboson invariant mass.
