Flavor Changing Top Quark Decay and Bottom-Strange Production in the Littlest Higgs Model with T-parity

Flavor changing effects on the processes t→ch, e⁺e^-→bs, e⁺e^-→bsh and pp→bs in the LHT model are investigated in this paper. We calculate the one-loop level contributions from the T-parity odd mirror fermions and gauge bosons. The results show that the top quark rare decay t→ch in the LHT model can be significantly enhanced relative to that in the SM. The bs production at linear colliders in the LHT model can enhance the SM cross section a lot and reach 0.1 fb in some parameter space allowed in the experiment. But the heavy gauge boson and mirror fermion loops have small contribution to the processes pp→bs and e⁺e^-→bsh. So the LHT effect on e⁺e^-→bs might be detected at future linear colliders, while it is too small to be seen for the e⁺e^-→bsh and pp→bs processes at future linear colliders and LHC.