Single Production of a Heavy T-Quark in the Left-Right Twin Higgs Model at LHeC

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In the context of the left-right twin Higgs model, we study single production of a T-quark at the Large Hadron electron Collider based ep and γp colliders, which proceed via the processes e+b → ν̄eT and γb → W−T. For the main decay mode T → φ+b → tb̄b, these two processes mainly transfer to the final states of 3b + l (e or μ) + missing ET and 3b + 2l + missing ET, respectively. With the electron energy Ee = 500 GeV and photon energy Ep=7 TeV, we find that the production rates can reach tens fb when the heavy T—quark mass mT < 600 GeV. A simple phenomenological analysis is also given for the decay mode T → W+b. Our numerical results show that the SM background can be reduced by applying a cut on the transverse momentum of the final b-quark and the invariant mass of Wb. However, such a channel is only useful for a tiny parameter space.