Search for anomalous couplings in the Higgs sector at LEP
Copyright policy )Search for anomalous couplings in the Higgs sector at LEP
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 -> Z��and 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.
- University of Michigan–Ann Arbor United States
- French National Centre for Scientific Research France
- University of Michigan–Flint United States
- California Institute of Technology United States
- University of Basel Switzerland
Higgs particle: width, ENERGIES, Higgs particle --> 2beauty, l3 experiment;, High Energy Physics - Experiment, W-PAIR PRODUCTION, High Energy Physics - Experiment (hep-ex), MUON DETECTOR, channel cross section: branching ratio, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], MONTE-CARLO PROGRAM, e(+)e(-) collisions;, model;, construction;, info:eu-repo/classification/ddc/530, L3 EXPERIMENT, muon detector;, CONSTRUCTION, electron positron --> Higgs particle photon, CERN LEP Stor, electron positron: colliding beams, Higgs particle --> 2photon, Higgs particle: mass, L3, Higgs particle: electroproduction, Higgs particle: decay modes, upper limit, Nuclear and High Energy Physics, Higgs particle --> Z0 photon, 189 GeV-cms, FOS: Physical sciences, electron positron: annihilation, 530, monte-carlo program;; l3 experiment;; e(+)e(-) collisions;; boson production;; muon detector;; 2 photons;; root-s;; model;; construction;; calorimeter, Theoretical High Energy Physics, calorimeter, CALORIMETER, ANNIHILATION, root-s;, monte-carlo program;, BOSON PRODUCTION, Higgs particle: coupling, MONTE-CARLO PROGRAM; W-PAIR PRODUCTION; BOSON PRODUCTION; E(+)E(-) INTERACTIONS; MUON DETECTOR; L3 EXPERIMENT; ENERGIES; CONSTRUCTION; ANNIHILATION; CALORIMETER, E(+)E(-) INTERACTIONS, electron positron --> Higgs particle Z0, 500, boson production;, Z0: associated production, photon: associated production, 2 photons;, Experimental High Energy Physics, 500.2, experimental results, ddc: ddc:500.2
Higgs particle: width, ENERGIES, Higgs particle --> 2beauty, l3 experiment;, High Energy Physics - Experiment, W-PAIR PRODUCTION, High Energy Physics - Experiment (hep-ex), MUON DETECTOR, channel cross section: branching ratio, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], MONTE-CARLO PROGRAM, e(+)e(-) collisions;, model;, construction;, info:eu-repo/classification/ddc/530, L3 EXPERIMENT, muon detector;, CONSTRUCTION, electron positron --> Higgs particle photon, CERN LEP Stor, electron positron: colliding beams, Higgs particle --> 2photon, Higgs particle: mass, L3, Higgs particle: electroproduction, Higgs particle: decay modes, upper limit, Nuclear and High Energy Physics, Higgs particle --> Z0 photon, 189 GeV-cms, FOS: Physical sciences, electron positron: annihilation, 530, monte-carlo program;; l3 experiment;; e(+)e(-) collisions;; boson production;; muon detector;; 2 photons;; root-s;; model;; construction;; calorimeter, Theoretical High Energy Physics, calorimeter, CALORIMETER, ANNIHILATION, root-s;, monte-carlo program;, BOSON PRODUCTION, Higgs particle: coupling, MONTE-CARLO PROGRAM; W-PAIR PRODUCTION; BOSON PRODUCTION; E(+)E(-) INTERACTIONS; MUON DETECTOR; L3 EXPERIMENT; ENERGIES; CONSTRUCTION; ANNIHILATION; CALORIMETER, E(+)E(-) INTERACTIONS, electron positron --> Higgs particle Z0, 500, boson production;, Z0: associated production, photon: associated production, 2 photons;, Experimental High Energy Physics, 500.2, experimental results, ddc: ddc:500.2
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