Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1999-12-06
Phys.Rev.D62:012004,2000
Physics
High Energy Physics
High Energy Physics - Experiment
Submitted to Phys. Rev. D, 21 pages, 7 figures
Scientific paper
10.1103/PhysRevD.62.012004
Top quark production offers the unique opportunity to search for a charged Higgs boson ($H^\pm$), as the contribution from $t\to H^+b\to \tau^+\nu b$ can be large in extensions of the Standard Model. We use results from a search for top quark pair production by the Collider Detector at Fermilab (CDF) in the e$\tau + \ebar_T$+jets and $\mu\tau +\ebar_T$+jets signatures to set an upper limit on the branching ratio of ${\cal B} (t \to H^{+} b)$ in 106 pb$^{-1}$ of data. The upper limit is in the range 0.5 to 0.6 at 95% C.L. for $H^{+}$ masses in the range 60 to 160 GeV, assuming the branching ratio for {$H^+\to \tau \nu$} is 100% . The $\tau$ lepton is detected through its 1-prong and 3-prong hadronic decays.
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