L3
PUBLISHED
BEYOND SM
Search for Charged Higgs Bosons in e+ee^{+}e^{-} Collisions at s\sqrt{s} = 189 GeV

A search for pair-produced charged Higgs bosons is performed with the L3 detector at LEP using data collected at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.4 pb1\mathrm{pb^{-1}}. Higgs decays into a charm and a strange quark or into a tau lepton and its associated neutrino are considered. The observed events are consistent with the expectations from Standard Model background processes. A lower limit of 65.5 GeV on the charged Higgs mass is derived at 95\% confidence level, independent of the decay branching ratio Br(H±τν)\mathrm{Br(H^\pm\rightarrow \tau\nu)}.

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