In a data sample of 78.3 pb(-1) collected in 1996 and 1997 by the ALEPH detector at centre-of-mass energies from 161 to 184 GeV, invisible decays of a Higgs boson have been searched for in the reaction e(+)e(-) --> hZ, where the Z can decay into e(+)e(-), mu(+) mu(-) or <q(q)over bar>. No evidence for a signal is found and limits on the production cross section are derived as a function of the Higgs boson mass. These results are combined with those obtained in an update of the analyses of the ALEPH data taken at LEP 1. For a production cross section equal to that of the minimal standard model Higgs boson, masses below 80 GeV/c(2) are excluded at 95% C.L. (C) 1999 Elsevier Science B.V. All rights reserved.
|Titolo:||Search for invisible Higgs boson decays in e(+)e(-) collisions at centre-of-mass energies up to 184Gev|
|Data di pubblicazione:||1999|
|Digital Object Identifier (DOI):||10.1016/S0370-2693(99)00117-3|
|Appare nelle tipologie:||1.1 Articolo in rivista|