  The cross section for the production of Z gamma in proton-proton collisions
at 8 TeV is measured based on data collected by the CMS experiment at the LHC
corresponding to an integrated luminosity of 19.5 inverse femtobarns. Events
with an oppositely-charged pair of muons or electrons together with an isolated
photon are selected. The differential cross section as a function of the photon
transverse momentum is measured inclusively and exclusively, where the
exclusive selection applies a veto on central jets. The observed cross sections
are compatible with the expectations of next-to-next-to-leading-order quantum
chromodynamics. Limits on anomalous triple gauge couplings of Z Z gamma and Z
gamma gamma are set that improve on previous experimental results obtained with
the charged lepton decay modes of the Z boson.
