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

Research output: Contribution to journalJournal article


  • ALEPH Collaboration
<mark>Journal publication date</mark>2007
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number2
Number of pages17
Pages (from-to)439-455
<mark>Original language</mark>English


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-→Hff̄ 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→γγ, to significantly extend the limits on the mass of a fermiophobic Higgs boson.