335 research outputs found
The production and decay of the top partner in the left-right twin higgs model at the ILC and CLIC
The left-right twin Higgs model (LRTHM) predicts the existence of the top
partner . In this work, we make a systematic investigation for the single
and pair production of this top partner through the processes:
e^{+}e^{-}\to t\ov{T} + T\bar{t} and T\ov{T}, the neutral scalar (the
SM-like Higgs boson or neutral pseudoscalar boson ) associate
productions e^{+}e^{-}\to t\ov{T}h +T\bar{t}h, T\ov{T}h,
t\ov{T}\phi^{0}+T\bar{t}\phi^{0} and T\ov{T}\phi^{0}. From the numerical
evaluations for the production cross sections and relevant phenomenological
analysis we find that (a) the production rates of these processes, in the
reasonable parameter space, can reach the level of several or tens of fb; (b)
for some cases, the peak value of the resonance production cross section can be
enhanced significantly and reaches to the level of pb; (c) the subsequent decay
of may generate typical phenomenological
features rather different from the signals from other new physics models beyond
the standard model(SM); and (d) since the relevant SM background is generally
not large, some signals of the top partner predicted by the LRTHM may be
detectable in the future ILC and CLIC experiments.Comment: 20pages, 15 figures and 6 Tables. Minor corrections on text. new
references adde
Search for single production of the vector-like top partner at the 14 TeV LHC
The new heavy vector-like top partner~() is one of typical features of
many new physics models beyond the standard model. In this paper we study the
discovery potential of the LHC for the vector-like -quark both in the
leptonic and (trilepton) channels at
TeV in the single production mode. Our analysis is based on a
simplified model including a singlet with charge with only two
free parameters, namely the coupling parameter and the top
partner mass . The exclusion limits, evidence and the
discovery reach in the parameter plane of , are,
respectively, obtained for some typical integrated luminosity at the 14 TeV
LHC. Finally we analyze the projected sensitivity in terms of the production
cross section times branching fraction for two decay channel.Comment: 15 pages, 10 figures, 2 tables. version in EPJ
Associated production of the charged Higgs boson and single top quark at the LHC
The left-right twin Higgs(LRTH) model predicts the existence of the charged
Higgs . In this paper, we study the production of the charged Higgs
boson with single top quark via the process at the
Large Hadron Collider(LHC). The numerical results show that the
production cross section can reach the level of in the reasonable
parameter space of the LRTH model. We expect that, as long as it is not too
heavy, the possible signatures of the heavy charged Higgs boson
might be detected via the decay mode at the LHC
experiments.Comment: This paper has been withdrawn by the author(s) due to some mistakes
in this pape
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