Search for charged Higgs bosons in L3

Abstract

A search for pair-produced charged Higgs bosons is performed with the L3 detector at LEP using data collected at centre-of-mass energies between 200 and 209 GeV, corresponding to an integrated luminosity of 217.8 pb^-1. We observe an excess of events in the H+-H -> cscs and csτνchannels in the mass region around 68 GeV, which is most significant at low values of the H+ -> τνbranching ratio. Including data taken at lower centre-of-mass energies, the excess is compatible with a 4.4σfluctuation in the background. Interpreting this excess as a statistical fluctuation in the background, lower limits on the charged Higgs mass are derived at the 95% confidence level. They vary from 67.1 to 84.9 GeV as a function of the H+ -> τνbranching ratio. These results are PRELIMINARY.

arXiv comment4 pages, 4 figures, to be published in the proceedings of LEPTRE, XIII Convegno sulla Fisica al LEP (Rome, Italy)

Cited by in corpus (9)

• Search for a light charged Higgs boson in top quark decays in pp collisions at sqrt(s) = 7 TeV
• Charged-Higgs phenomenology in the Aligned two-Higgs-doublet model
• Higgs boson decay into 2 photons in the type~II Seesaw Model
• Searches for Supersymmetry at High-Energy Colliders
• Vacuum Stability and Higgs Diphoton Decay Rate in the Zee-Babu Model
• Review of Properties of the Top Quark from Measurements at the Tevatron
• Natural Stabilization of the Higgs Boson's Mass and Alignment
• On Lepton Flavor Universality in Top Quark Decays
• Stau LSP and comparison with H^+(-) phenomenology