Searches for New Physics in Diphoton Events in proton anti-proton collisions at sqrt(s)=1.8TeV

Abstract

We have searched for anomalous production of missing E${}_{\mathrm{T}}$ ($\mett$), jets, leptons ($e,\mu ,\tau$), $b$-quarks, or additional photons in events containing two isolated, central \mbox{($|\eta |<1.0$)} photons with \mbox{$\Et>12$~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${}_{\mathrm{T}}$ electromagnetic cluster, and large $\mett$. We set limits using two specific SUSY scenarios for production of diphoton events with $\mett$.

Submitted to PRL, 8 Pages