Searches for New Physics in Photon Final States

TL;DR

This paper reports on searches for new physics in photon final states at Fermilab's CDF Run II, analyzing more data at higher energy to investigate previous intriguing anomalies observed in Run I.

Contribution

It presents new searches for physics beyond the Standard Model in photon final states using upgraded detector data at higher collision energy.

Findings

No definitive evidence for new physics was observed.

The analysis set new limits on potential new physics scenarios.

Results help clarify whether previous anomalies indicated new phenomena.

Abstract

The Run I results on the searches for new physics in photon final states were intriguing. The rare 2 electrons + 2 photons + missing transverse energy (MET) candidate event and the measured event rate for the signature lepton + photon + MET, which was 2.7 sigma above the Standard Model predictions, sparked signature-based searches in the photon + photon + X and lepton + photon + X channels. With more data in Run II we should be able to answer a simple question: was it an anomaly or were the Run I results the first evidence for the new physics? We present searches for New Physics in Photon Final States at CDF Run II, Fermilab, with substantially more data and a higher $\pbarp$ collision energy, 1.96 TeV, and the upgraded CDF detector (CDF II).