Search for an invisibly decaying Higgs boson in e+ e- collisions at 189-GeV
Sep, 199913 pages
Published in:
- Phys.Lett.B 466 (1999) 50-60
Report number:
- CERN-EP-99-125
Experiments:
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Abstract: (Elsevier)
The data collected in 1998 by ALEPH at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.2 pb −1 , are analysed to search for invisible decays of a Higgs boson produced in the reaction e + e − → h Z . The number of events found in the data and their properties are in agreement with the Standard Model expectation. This search results in an improved 95% C.L. lower limit on the Higgs boson mass of 95.4 GeV/ c 2 , assuming it decays totally invisibly and for a production cross section equal to that of the Standard Model.- electron positron: colliding beams
- electron positron: annihilation
- Higgs particle: search for
- Higgs particle: electroproduction
- Z0: associated production
- Higgs particle: decay
- Higgs particle: mass
- lower limit
- Z0: decay modes
- lepton: pair production
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