Search for Anomalous Production of Events with Two Photons and Additional Energetic Objects at CDF

TL;DR

This study searches for unusual events involving two photons plus other energetic particles in proton-antiproton collisions, aiming to find signs of new physics beyond the standard model, but finds results consistent with known physics.

Contribution

Introduces new analysis techniques that effectively reduce instrumental backgrounds in photon and missing energy channels, enhancing sensitivity to potential new physics signals.

Findings

Results are consistent with standard model predictions.

No evidence of anomalous production observed.

Analysis techniques improve background suppression.

Abstract

We present results of a search for anomalous production of two photons together with an electron, muon, $\tau$ lepton, missing transverse energy, or jets using $p\bar{p}$ collision data from 1.1-2.0 fb$^{-1}$ of integrated luminosity collected by the Collider Detector at Fermilab (CDF). The event yields and kinematic distributions are examined for signs of new physics without favoring a specific model of new physics. The results are consistent with the standard model expectations. The search employs several new analysis techniques that significantly reduce instrumental backgrounds in channels with an electron and missing transverse energy.