We explore the prospect of charged Higgs boson search in top quark decay at the Tevatron collider upgrade, taking advantage of the opposite states of $\tau$ polarization resulting from the $H^\pm$ and $W^\pm$ decays. Methods of distinguishing the two contr
Figure Captions
s=2TeV.The cross-sections are shown as functions of neutral pion E T accompanying
the charged track in theτ-jet.
Fig. 2.The1-prong hadronicτ-jet cross-sections are plotted against the jet E T in
(a)without and(b)with the isolation cut.They are plotted against the
?E T of the jet in(c).The H±signal(W±background)contributions are
shown as solid(dashed)lines for m H=100GeV and dot-dashed(dotted)
√
lines for m H=140GeV.We take
s=4TeV.The solid(dashed) and dot-dashed(dotted)lines correspond to the signal(background)for
m H=100and150GeV respectively.We take tanβ=1.4.
Fig. 6.The signal cross-sections of Fig.5(a,b,c),satisfying a signal to background ratio≥1,are shown as functions of tanβfor m H=80,100,120,140and
150GeV by solid,dashed,dot-dashed,double-dot-dashed and dotted lines
respectively.
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