A flavour independent search for the CP-even and CP-odd neutral Higgs bosons h and A is performed in 624 pb(-1) of data collected with the L3 detector at LEP at centre-of-mass energies between 189 and 209 GeV. Higgs boson production through the e(+)e(-) --> Zh and the e(+)e(-) --> hA processes is considered and decays of the Higgs bosons into hadrons are studied. No significant signal is observed and 95% confidence level limits on the hZZ and hAZ couplings are derived as a function of the Higgs boson masses. Assuming the Standard Model cross section for the Higgs-strahlung process and a 100% branching fraction into hadrons, a 95% confidence level lower limit on the mass of the Higgs boson is set at 110.3 GeV.
P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, et al. (2004). Flavour independent search for neutral Higgs bosons at LEP. PHYSICS LETTERS. SECTION B, 583, 14-27 [10.1016/j.physletb.2003.12.039].
Flavour independent search for neutral Higgs bosons at LEP
BASILE, MAURIZIO;CIFARELLI, LUISA;ZICHICHI, ANTONINO;
2004
Abstract
A flavour independent search for the CP-even and CP-odd neutral Higgs bosons h and A is performed in 624 pb(-1) of data collected with the L3 detector at LEP at centre-of-mass energies between 189 and 209 GeV. Higgs boson production through the e(+)e(-) --> Zh and the e(+)e(-) --> hA processes is considered and decays of the Higgs bosons into hadrons are studied. No significant signal is observed and 95% confidence level limits on the hZZ and hAZ couplings are derived as a function of the Higgs boson masses. Assuming the Standard Model cross section for the Higgs-strahlung process and a 100% branching fraction into hadrons, a 95% confidence level lower limit on the mass of the Higgs boson is set at 110.3 GeV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


