Search for diphoton events with large missing transverse energy in p(p)over-bar collisions at root s=1.8 TeV

A search for new physics has been carried out in the channel <p(p)over bar> --> gamma gamma + is not an element of(T), as expected in various supersymmetric models. We require two photons with transverse energy E(T)(gamma) > 12 GeV and pseudorapidity \eta(gamma)\ < 1.1. The distribution of missing transverse energy (is not an element of(T)) is consistent with background and no events have is not an element of(T) > 25 GeV. We set limits on production cross sections for selectron, sneutrino, and neutralino pairs, decaying into photons, which range from about 400 fb to 1 pb depending on the sparticle masses. A general limit of 185 fb (95% C.L.) is set on sigma(<p(p)over bar> --> gamma gamma is not an element of(T) + X), where E(T)(gamma) > 12 GeV, \eta(gamma)\ < 1.1, and is not an element of(T) > 25 GeV.