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

    Abstract
  • 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→1px solid; padding-top: 0px;">νeT and γb→W−T. For the main decay mode T→φ+b→t1px solid; padding-top: 0px;">bb, 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.
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