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-, μ+μ- or qq¯. 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/c2 are excluded at 95% C.L.

Search for invisible Higgs boson decays in e+e− collisions at centre-of-mass energies up to 184 GeV

GREGORIO, ANNA;GIANNINI, GIANROSSANO;
1999-01-01

Abstract

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-, μ+μ- or qq¯. 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/c2 are excluded at 95% C.L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2562524
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