Single vector-like T-quark search via the T → Wb decay channel at the LHeC

In this letter, we analyze the prospects of observing the new vector-like T-quark in the leptonic T→bW decay channel at the Large Hadron Electron Collider (LHeC). The results show that the mixing between the T-quark with the first generation quarks can largely enhance the production cross section. We further study the observability of the single T through the process e+p→T(→bW+)ν¯e→bℓ++E̸Tmiss at the LHeC with the proposed 140 GeV electron beam (with 80% polarization) and 7 TeV proton beam. To be as model-independent as possible, a simplified model method with only two free parameters (g⁎ and RL) has been applied. For three typical T-quark masses, the 3σ exclusion limits as well as the 5σ discovery region are respectively presented in terms of parameter space regions.