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A search is presented for exotic decays of a Higgs boson into undetectableparticles and one or two isolated photons in pp collisions at a center-of-massenergy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4inverse femtobarns collected with the CMS detector at the LHC. Higgs bosonsproduced in gluon-gluon fusion and in association with a Z boson areinvestigated, using models in which the Higgs boson decays into a gravitino anda neutralino or a pair of neutralinos, followed by the decay of the neutralinoto a gravitino and a photon. The selected events are consistent with thebackground-only hypothesis, and limits are placed on the product of crosssections and branching fractions. Assuming a standard model Higgs bosonproduction cross section, a 95% confidence level upper limit is set on thebranching fraction of a 125 GeV Higgs boson decaying into undetectableparticles and one or two isolated photons as a function of the neutralino mass.For this class of models and neutralino masses from 1 to 120 GeV an upper limitin the range of 7 to 13% is obtained. Further results are given as a functionof the neutralino lifetime, and also for a range of Higgs boson masses.

Search for exotic decays of a Higgs boson into undetectable particles and one or more photons