F. Abe et al., SEARCH FOR CHARGED-HIGGS-BOSON DECAYS OF THE TOP-QUARK USING HADRONICTAU-DECAYS, Physical review. D. Particles and fields, 54(1), 1996, pp. 735-742
We present the result of a search for charged Higgs boson decays of th
e top quark, produced in p (p) over bar collisions at root s=1.8 TeV.
When the charged Higgs boson is heavy and decays to a tau lepton, whic
h subsequently decays hadronically, the resulting events have a unique
signature: large missing transverse energy and the low-charged-multip
licity tau. Data collected in 1992 and 1993 at the Collider Detector a
t Fermilab, corresponding to 18.7+/-0.7 pb(-1), exclude new regions of
combined top quark and charged Higgs boson mass, in extensions to the
standard model with two Higgs doublets.