Search for new physics in final states with low transverse energy photon and missing transverse energy

We present a search for new physics in the final state of a low transverse energy photon and missing transverse energy using 7.3 $fb^{-1}$ of $\sqrt{s} = 8$ TeV LHC proton-proton collisions collected with the Compact Muon Solenoid (CMS) detector. This analysis extends the high-energy single-photon searches to a lower-energy regime. In the absence of deviations from the standard model predictions, limits are set on the production cross section of exotic decays of the Higgs boson. We have also analyzed the phase space consisting of a photon with a transverse energy of at least $45$ GeV and missing transverse energy in a model independent way by varying the selection requirements on the missing transverse energy and transverse mass. We set upper limits at the 95$\%$ confidence level on the production cross section of possible processes appearing in this final state.