Search for Anomalous Couplings in the Higgs Sector at LEP

Abstract

Anomalous couplings of the Higgs boson are searched for through the processes e^+ e^- -> H gamma, e^+ e^- -> e^+ e^- H and e^+ e^- -> HZ. The mass range 70 GeV < m_H < 190 GeV is explored using 602 pb^-1 of integrated luminosity collected with the L3 detector at LEP at centre-of-mass energies sqrt(s)=189-209 GeV. The Higgs decay channels H -> ffbar, H -> gamma gamma, H -> Zγand H -> WW^(*) are considered and no evidence is found for anomalous Higgs production or decay. Limits on the anomalous couplings d, db, Delta(g1z), Delta(kappa_gamma) and xi^2 are derived as well as limits on the H -> gamma gamma and H -> Z gamma decay rates.

References in corpus (4)

• Search for the Standard Model Higgs Boson at LEP
• Measurement of Triple-Gauge-Boson Couplings of the W Boson at LEP
• Search for Associated Production of Massive States Decaying into Two Photonsin e+e- Annihilations at sqrt(s) = 88-209 GeV
• Search for a Higgs Boson Decaying to Weak Boson Pairs at LEP

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• Release Note -- Vbfnlo-2.6.0
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