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 phenomena in proton-antiproton collisions by analyzing diphoton events with additional signatures, finding results consistent with the Standard Model but setting limits on supersymmetric models.

Contribution

It introduces a search for anomalous diphoton events with missing energy and other signatures, providing new constraints on supersymmetric scenarios.

Findings

Results consistent with Standard Model expectations.

One event with unusual features observed.

Limits set on specific SUSY models.

Abstract

We have searched for anomalous production of missing E$_{\rm T}$ ($\mett$), 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$_{\rm T}$ electromagnetic cluster, and large $\mett$. We set limits using two specific SUSY scenarios for production of diphoton events with $\mett$.