Searches for new physics in diphoton events in p(p)over-bar collisions at root s=1.8 TeV

We have searched for anomalous production of missing E-T ((E) over bar(T)), jets, leptons (e, mu, tau), b quarks, or additional photons in events containing two isolated, central (\eta\ 12 GeV. The results are consistent with standard model expectations, with the possible exception of one event that has in addition to the two photons a central electron, a high-E-T electromagnetic cluster, and large (E) over bar(T). We set limits using two specific supersymmetry scenarios for production of diphoton events with (E) over bar(T)