Search for a Higgs boson decaying into two photons in $e^{+} e^{-}$ interactions at $\sqrt{S}$ = 189-GeV

A search is performed for a Higgs boson produced in association with a Z boson and decaying into two photons, using the L3 data collected at LEP at a centre-of-mass energy of 189 GeV. All decay modes of the Z are considered. No signal is observed and limits on the branching fraction of the Higgs boson decay into two photons as a function of the Higgs mass are derived assuming a Standard Model production rate. A lower limit on the mass of a fermiophobic Higgs is set at 94.9 GeV at 95% confidence level.

electron positron: colliding beams
electron positron: annihilation
Higgs particle: search for
Higgs particle: electroproduction
Z0: associated production
Higgs particle: radiative decay
Z0: decay modes
Higgs particle: branching ratio
mass dependence
Higgs particle: mass

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Search for a Higgs boson decaying into two photons in e+e−e^{+} e^{-}e+e− interactions at S\sqrt{S}S​ = 189-GeV

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Search for a Higgs boson decaying into two photons in $e^{+} e^{-}$ interactions at $\sqrt{S}$ = 189-GeV