# Search for $\gamma\gamma$ decays of a Higgs boson in $e^+e^-$ collisions at $\sqrt{s}$ up to 209 GeV

Abstract : A search for events with a photon pair arising from the decay of a Higgs boson produced in association with a fermion pair, is performed in 893pb^-1 of data recorded by the ALEPH detector at LEP at centre-of-mass energies up to 209GeV. No excess of such events is found over the expected background. An upper limit is derived on the product of the e^+e^- -> HZ cross section and the H -> gamma gamma branching fraction as a function of the Higgs boson mass. A fermiophobic Higgs boson produced with the Standard Model cross section is excluded at 95\% confidence level for all masses below 105.4GeV/c2
Document type :
Journal articles

Cited literature [14 references]

http://hal.in2p3.fr/in2p3-00011767
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Submitted on : Monday, November 4, 2002 - 4:58:06 PM
Last modification on : Tuesday, October 19, 2021 - 10:50:10 PM
Long-term archiving on: : Tuesday, September 7, 2010 - 3:41:11 PM

### Identifiers

• HAL Id : in2p3-00011767, version 1

### Citation

A. Heister, S. Schael, R. Barate, R. Bruneliere, I. de Bonis, et al.. Search for $\gamma\gamma$ decays of a Higgs boson in $e^+e^-$ collisions at $\sqrt{s}$ up to 209 GeV. Physics Letters B, Elsevier, 2002, 544, pp.16-24. ⟨in2p3-00011767⟩

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