In the context of the left-right twin Higgs model,we study single production of a𝑇-quark at the Large Hadron electron Collider based𝑒ep and γpcolliders,which proceed via the processes𝑒e+bw...In the context of the left-right twin Higgs model,we study single production of a𝑇-quark at the Large Hadron electron Collider based𝑒ep and γpcolliders,which proceed via the processes𝑒e+b𝑏→ˉveT and𝛾γp→W−T.For the main decay mode𝑇T→Φ+b𝑏→tbbˉ,these two processes mainly transfer to the final states of 3b+l(e or μ)+missing Et and 3b𝑏+2l𝑙+missing𝐸𝑇,respectively.With the electron energy𝐸Ee=500 GeV and photon energy𝐸Ep=7TeV,we find that the production rates can reach tens fb when the heavy𝑇−quark mass𝑚mt<600 GeV.A simple phenomenological analysis is also given for the decay modeT→W+b𝑏.Our numerical results show that the SM background can be reduced by applying a cut on the transverse momentum of the final𝑏b-quark and the invariant mass of Wb.However,such a channel is only useful for a tiny parameter space.展开更多
基金by the National Natural Science Foundation of China under Grant No 10775039the Foundation of He’nan Educational Committee(No 2009B140003).
文摘In the context of the left-right twin Higgs model,we study single production of a𝑇-quark at the Large Hadron electron Collider based𝑒ep and γpcolliders,which proceed via the processes𝑒e+b𝑏→ˉveT and𝛾γp→W−T.For the main decay mode𝑇T→Φ+b𝑏→tbbˉ,these two processes mainly transfer to the final states of 3b+l(e or μ)+missing Et and 3b𝑏+2l𝑙+missing𝐸𝑇,respectively.With the electron energy𝐸Ee=500 GeV and photon energy𝐸Ep=7TeV,we find that the production rates can reach tens fb when the heavy𝑇−quark mass𝑚mt<600 GeV.A simple phenomenological analysis is also given for the decay modeT→W+b𝑏.Our numerical results show that the SM background can be reduced by applying a cut on the transverse momentum of the final𝑏b-quark and the invariant mass of Wb.However,such a channel is only useful for a tiny parameter space.