Exotic Photon Searches at CDF II

TL;DR

This paper reports on multiple searches for exotic photon-related phenomena at CDF II, finding no deviations from the standard model and setting limits on a fermiophobic Higgs boson.

Contribution

It presents new experimental searches for exotic photons, including constraints on a fermiophobic Higgs, using data from the CDF II detector.

Findings

No evidence for anomalous photon production beyond the standard model

Excluded fermiophobic Higgs with mass below 106 GeV/c^2 at 95% CL

Set limits on exotic photon signatures in collider data

Abstract

We present recent results of searches for exotic photons at CDF II. In the first signature-based search, we search for anomalous production of two photons with additional energetic objects. The results are consistent with the standard model expectations. In the second analysis, we present a signature-based search for anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a $b$ quark, and missing transverse energy. We find no indications of non-standard model phenomena. Finally, a search for a fermiophobic Higgs in the diphoton final state is presented. Since no evidence of a resonance in the diphoton mass spectrum is observed we exclude this Higgs boson with mass below 106 GeV/$c^2$ at a 95% confidence level.