Search for fermiophobic Higgs bosons in final states with photons at LEP 2

TL;DR

This study searched for fermiophobic Higgs bosons decaying into photons using LEP data, setting limits on production and excluding certain parameter regions in Two Higgs Doublet Models.

Contribution

First search for fermiophobic Higgs bosons decaying to photons at LEP, providing new constraints on model parameters.

Findings

No evidence for fermiophobic Higgs bosons was observed.

Limits were set on h0Z0 and h0A0 production cross sections.

Excluded regions in the parameter space of Two Higgs Doublet Models.

Abstract

Higgs boson production with subsequent decay to photons was searched for in the data collected by the DELPHI detector at centre-of-mass energies between 183 GeV and 209 GeV, corresponding to a total integrated luminosity of nearly 650 pb^{-1}. No evidence for a signal was found, and limits were set on h0Z0 and h0A0 production with h0 decay to photons. These results were used to exclude regions in the parameter space of fermiophobic scenarios of Two Higgs Doublet Models.