Search for Higgs bosons decaying to WW in $e^+ e^-$ collisions at LEP

Abstract : A search for Higgs bosons produced in association with a fermion pair, and decaying to WW, is performed with the data collected by the ALEPH detector at centre-of-mass energies ranging from 191 to 209 GeV. The data correspond to an integrated luminosity of 453.2 pb^-1. Thirteen exclusive selections are developed according to the different final state topologies. No statistically significant evidence for a Higgs boson decaying into a WW pair has been found. An upper limit is derived, as a function of the Higgs boson mass, on the product of the e+e- -> Hff cross section and the H -> WW branching ratio. The data on the search for H -> WW are combined with previously published ALEPH results on the search for H -> gamma gamma, to significantly extend the limits on the mass of a fermiophobic Higgs boson.
Document type :
Journal articles

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Submitted on : Tuesday, July 11, 2006 - 5:02:25 PM
Last modification on : Tuesday, August 2, 2022 - 3:45:20 AM

Citation

S. Schael, R. Barate, R. Brunelière, I. de Bonis, D. Decamp, et al.. Search for Higgs bosons decaying to WW in $e^+ e^-$ collisions at LEP. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2007, 49, pp.439-455. ⟨10.1140/epjc/s10052-006-0158-6⟩. ⟨in2p3-00085111⟩

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