INVESTIGADORES
DOVA Maria Teresa
artículos
Título:
Search for Anomalous Couplings in the Higgs Sector at LEP
Autor/es:
L3 COLLABORATION, P. ACHARD, M.T.DOVA ET AL
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER
Referencias:
Año: 2004 vol. 589 p. 89 - 102
ISSN:
0370-2693
Resumen:
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\gamma 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.