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

TL;DR

This paper reports a search for new physics in diphoton events from proton-antiproton collisions at 1.8 TeV, finding results consistent with the Standard Model but setting limits on SUSY scenarios involving missing transverse energy.

Contribution

It provides a detailed analysis of diphoton events and establishes new limits on supersymmetric models with missing energy signatures.

Findings

Results are consistent with Standard Model expectations.

One event observed with additional particles and large missing energy.

Limits set on SUSY scenarios for diphoton production with missing energy.

Abstract

We present a detailed description of a search for anomalous production of missing E_T ($\mett$), jets, leptons ($e, \mu, \tau$), b-quarks, or additional photons in events containing two isolated, central ($|\eta|<1.0$) photons with $\Et > 12$ 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_T electromagnetic cluster, and large $\mett$. We set limits using two specific SUSY scenarios for production of diphoton events with $\mett$.