Charged Higgs Boson Search at the Tevatron Upgrade Using Tau(15)

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

narrows down to tanβ=3?10(2.5?12)for m H=100(120)GeV.Moreover one can probe for m H=140GeV except for a gap in the region tanβ=2?15.

For the sake of completeness we have computed the signal and background

√

cross-sections for the suggested Ditevatron energy of

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