Observability of heavy charged Higgs through s-channel single top events at LHC

The charged Higgs bosons can be produced as a resonance in s-channel single top events. The light charged Higgs in such events preferably decays to a pair of τ ν thus making it difficult to distinguish from the large single W events producing the same final state. However, the heavy charged Higgs decay to a pair of t\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \overline{b} $\end{document} can be extracted from the SM background events. The final state under consideration in this paper contains the top quark decay to W+b followed by W+ decay to electrons or muons. It is shown that this signal can be observed at LHC at a large area of MSSM phase space (m(H±), tan β). Finally 5σ and 95% C.L. exclusion contours are presented at different integrated luminosities of LHC assuming a nominal center of mass energy of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt{s} $\end{document} = 14 TeV.