LIMITS ON CHARGED HIGGS USING ${\rm t{\bar t}}$ CROSS SECTION MEASUREMENTS

Abstract

We present the results of a search for charged Higgs in the decay products of [Formula: see text] at the CDF II detector at the Tevatron. The search is based on the cross section measurements of [Formula: see text] production in three exclusive decay channels: dilepton, lepton + jets and lepton + hadronic tau. Assuming the charged Higgs decays only via [Formula: see text], and [Formula: see text], and [Formula: see text], limits in the MSSM (mHiggs, tan (β)) plane are obtained at tree level. A model-independent analysis is introduced in which the results are independent of Higgs branching ratios. This analysis results in BR ( t → Hb )<0.7 at 95%CL for 80 GeV <mHiggs<150 GeV .