Search for invisible Higgs boson decays in e+ e- collisions at center-of-mass energies up to 184-GeV
Collaboration
11 pages
Published in:
- Phys.Lett.B 450 (1999) 301-312
Report number:
- CERN-EP-99-008,
- CERN-EP-99-08,
- CERN-EP-99-8
Experiments:
View in:
Citations per year
Abstract: (Elsevier)
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 q q ̄ . 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.- electron positron: colliding beams
- electron positron: annihilation
- Higgs particle: electroproduction
- Z0: associated production
- Z0: hadronic decay
- Z0: leptonic decay
- Higgs particle: decay
- event shape analysis: planarity
- channel cross section: mass
- upper limit
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