  A search for supersymmetry involving events with at least one photon, one
electron or muon, and large missing transverse momentum has been performed by
the CMS experiment. The data sample corresponds to an integrated luminosity of
19.7 inverse femtobarns of pp collisions at sqrt(s) = 8 TeV, produced at the
CERN LHC. No excess of events is observed beyond expectations from standard
model processes. The result of the search is interpreted in the context of a
general model of gauge-mediated supersymmetry breaking, where the charged and
neutral winos are the next-to-lightest supersymmetric particles. Within this
model, winos with a mass up to 360 GeV are excluded at the 95% confidence
level. Two simplified models inspired by gauge-mediated supersymmetry breaking
are also examined, and used to derive upper limits on the production cross
sections of specific supersymmetric processes.
