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.
|Titolo:||Search for Higgs bosons decaying to WW in e+ e- collisions at LEP|
|Parole Chiave:||High energy physics ; experiment ; elementary particles ; collider ; standard model ; LEP|
|Settore Scientifico Disciplinare:||Settore FIS/01 - Fisica Sperimentale|
|Data di pubblicazione:||2007|
|Digital Object Identifier (DOI):||10.1140/epjc/s10052-006-0158-6|
|Appare nelle tipologie:||01 - Articolo su periodico|