Measurement of the production cross section for Z gamma to nu nu gamma in pp collisions at sqrt(s) = 8 TeV and limits on Z Z gamma and Z gamma gamma triple gauge boson couplings

A measurement of the Z$\gamma\rightarrow\nu\bar{\nu}\gamma$ cross section in pp collisions at $\sqrt{s} = 8$ TeV is presented, using data corresponding to an integrated luminosity of 19.6 fb$^{-1}$ collected with the CMS detector at the LHC. This measurement is based on the observation of events with missing transverse momentum above 140 GeV and a single photon with transverse momentum above 145 GeV and absolute pseudorapidity range $|\eta| < 1.44$. The measured Z$\gamma\rightarrow\nu\bar{\nu}\gamma$ production cross section, $52.7 \pm 2.1 \rm{(stat.)} \pm 6.4 \rm{(syst.)} \pm 1.4 \rm{(lumi.)}$ fb, agrees well with the standard model prediction of $50.0 + 2.4 - 2.2$ fb. The results yield the most stringent limits to date on the anomalous ZZ$\gamma$ and Z$\gamma\gamma$ trilinear gauge boson couplings.