Search for High Mass Photon Pairs in p-pbar --> gamma-gamma-jet-jet Events at sqrt(s)=1.8 TeV

TL;DR

This study searches for a non-standard 'bosonic Higgs' in proton-antiproton collisions producing two photons and two jets, setting upper limits on production cross sections and establishing a lower mass limit for this hypothetical particle.

Contribution

First experimental search for a bosonic Higgs with specific decay signatures, providing constraints on its mass and production cross section.

Findings

Diphoton mass distribution matches background expectations.

Set upper limits on cross section from 0.60 to 0.26 pb across mass range.

Established a lower mass limit of 78.5 GeV/c^2 for the bosonic Higgs.

Abstract

A search has been carried out for events in the channel p-barp --> gamma gamma jet jet. Such a signature can characterize the production of a non-standard Higgs boson together with a W or Z boson. We refer to this non-standard Higgs, having standard model couplings to vector bosons but no coupling to fermions, as a "bosonic Higgs." With the requirement of two high transverse energy photons and two jets, the diphoton mass (m(gamma gamma)) distribution is consistent with expected background. A 90(95)% C.L. upper limit on the cross section as a function of mass is calculated, ranging from 0.60(0.80) pb for m(gamma gamma) = 65 GeV/c^2 to 0.26(0.34) pb for m(gamma gamma) = 150 GeV/c^2, corresponding to a 95% C.L. lower limit on the mass of a bosonic Higgs of 78.5 GeV/c^2.