Search for a Fermiophobic Higgs Boson Decaying into Diphotons in p p-bar Collisions at sqrt{s} = 1.96 TeV

TL;DR

This paper reports a search for a fermiophobic Higgs boson decaying into diphotons using proton-antiproton collision data, setting limits on its mass and cross section with no evidence of discovery.

Contribution

It provides the first experimental limits on a fermiophobic Higgs boson in diphoton decay channels at Tevatron energies.

Findings

No resonance observed in diphoton mass spectrum

Excluded Higgs boson masses below 106 GeV at 95% C.L.

Set upper limits on cross section times branching fraction

Abstract

A search for a narrow diphoton mass resonance is presented based on data from 3.0 fb^{-1} of integrated luminosity from p-bar p collisions at sqrt{s} = 1.96 TeV collected by the CDF experiment. No evidence of a resonance in the diphoton mass spectrum is observed, and upper limits are set on the cross section times branching fraction of the resonant state as a function of Higgs boson mass. The resulting limits exclude Higgs bosons with masses below 106 GeV at a 95% Bayesian credibility level (C.L.) for one fermiophobic benchmark model.