Observability of Heavy Charged Higgs through s-channel Single Top Events at LHC

Abstract

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 $\tau \nu$ 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 $t\bar{b}$ 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 ($m(H^{+}),tan\beta$). Finally $5\sigma$ and 95% CL exclusion contours are presented at different integrated luminosities of LHC assuming a nominal center of mass energy of $\sqrt{s}$ = 14 TeV.

18 pages, 16 figures

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• Single Top Production as a Probe of Heavy Resonances
• Charged Higgs decay to $W^{\pm }H$ at a high energy lepton collider
• Off-diagonal Yukawa Couplings in the s-channel Charged Higgs Production at LHC
• Observability of Charged Higgs through Triple or Double Higgs Production in a General Two Higgs Doublet Model at an e+e- Linear Collider
• Observability of s-channel Heavy Charged Higgs at LHC Using Top Tagging Technique
• The t-channel Charged Higgs Production in Single Top Events at LHC
• Charged Higgs observability in the single top production channel at LHC