Searches for invisibly decaying Higgs bosonswith the DELPHI detector at LEP

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The European Physical Journal C - Particles and Fields | 2004年 / 32卷
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Confidence Level; Higgs Boson; Mass Limit; Light Higgs Boson; Supersymmetric Extension;
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Searches for HZ production with the Higgs boson decaying into an invisible final state were performed using the data collected by the DELPHI experiment at centre-of-mass energies between 188 GeV and 209 GeV. Both hadronic and leptonic final states of the Z boson were analysed. In addition to the search for a heavy Higgs boson, a dedicated search for a light Higgs boson down to 40 GeV/c2 was performed. No signal was found. Assuming the Standard Model HZ production cross-section, the mass limit for invisibly decaying Higgs bosons is 112.1 GeV/c2 at 95% confidence level. An interpretation in the Minimal Supersymmetric extension of the Standard Model (MSSM) and in a Majoron model is also given.
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页码：475 / 492
页数：17
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