Search for Supersymmetry in Events with Photons and Missing Energy

We have performed a search for supersymmetry in a gauge-mediation scenario with the gravitino as the lightest supersymmetric particle. The data sample corresponds to an integrated luminosity of 4.7~\fbinv of $pp$~collisions at $\sqrt{s}=7~\TeV$, recorded by the CMS experiment at the LHC. We compare the missing transverse energy distribution in events containing either at least two photons plus at least one hadronic jet or at least one photon plus at least two hadronic jets to the spectra expected from standard model processes. No excess of events at high missing transverse energy is observed and upper limits on the signal production cross sections of order 0.01~pb (0.1~pb) at the 95\% confidence level for the bino-like (wino-like) scenarios are determined for a range of squark, gluino, and neutralino masses. This analysis is also re-interpreted as a search for Universal Extra Dimensions leading to 95\% exclusion values of $1/R<1335$~\GeV for $N_{\textrm{LEDs}}=6$.