The production and decay of the top partner $T$ in the left-right twin higgs model at the ILC and CLIC

Abstract

The left-right twin Higgs model (LRTHM) predicts the existence of the top partner $T$. In this work, we make a systematic investigation for the single and pair production of this top partner $T$ through the processes: $e^{+}e^{-}\to t\ov{T} + T\bar{t}$ and $ T\ov{T}$, the neutral scalar (the SM-like Higgs boson $h$ or neutral pseudoscalar boson ${\varphi }^0$) associate productions $e^{+}e^{-}\to t\ov{T}h +T\bar{t}h$, $T\ov{T}h$, $t\ov{T}ϕ^{0}+T\bar{t}ϕ^{0}$ and $ T\ov{T}ϕ^{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 $T\to {\varphi }^{+}b\to t\bar{b}b$ 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 $T$ predicted by the LRTHM may be detectable in the future ILC and CLIC experiments.

20pages, 15 figures and 6 Tables. Minor corrections on text. new references added

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Cited by in corpus (8)

• Search for single production of the vector-like top partner at the 14 TeV LHC
• Search for single production of the heavy vectorlike $T$ quark with $T\to th$ and $h\to \gamma \gamma$ at the high-luminosity LHC
• Search for single production of a top quark partner via the $T\to th$ and $h\to W{W}^{\ast }$ channels at the LHC
• Single production of vectorlike $B$ quarks at the CLIC
• Single production of vector-like $T$ quark at future high-energy linear $e^{+}{e}^{-}$ collider
• Pair production of the singlet vector-like B quark at the CLIC
• Single Higgs boson production at the ILC in the left-right twin Higgs model
• Constraining dark matter in the LRTH model with latest LHC, XENON100 and LUX data