  A measurement is presented of the cross section for the electroweak
production of a Z boson and a photon in association with two jets in
proton-proton collisions at sqrt(s)= 8 TeV. The Z bosons are identified through
their decays to electron or muon pairs. The measurement is based on data
collected with the CMS detector corresponding to an integrated luminosity of
19.7 inverse femtobarns. The electroweak contribution has a significance of 3.0
standard deviations, and the measured fiducial cross section is 1.86
+0.90/-0.75 (stat) +0.34/-0.26 (syst) +/- 0.05 (lumi) fb, while the summed
electroweak and quantum chromodynamic total cross section in the same region is
observed to be 5.94 +1.53/-1.35 (stat) +0.43/-0.37 (syst) +/- 0.13 (lumi) fb.
Both measurements are consistent with the leading-order standard model
predictions. Limits on anomalous quartic gauge couplings are set based on the Z
gamma mass distribution.
