Top partner production at $e^{+}{e}^{-}$ collider in the littlest Higgs Model with T-parity

Abstract

In the framework of the littlest Higgs Model with T-parity, we discuss the top partner production at future $e^{+}{e}^{-}$ collider. We calculate the cross sections of the top partner production processes and associated production processes of Higgs and top partner under current constraints. Then, we investigate the observability of the T-odd top partner pair production through the process $e^{+}{e}^{-}\to T_{-}{\bar{T}}_{-}\to t\bar{t}{A}_H{A}_H$ in the $t\bar{t}$ di-lepton channel for two T-odd top partner mass $m_{T_{-}}$=603(708) GeV at $\sqrt{s}$=1.5 TeV. We analyze the signal significance depending on the integrated luminosity and find this signal is promising at the future high energy $e^{+}{e}^{-}$ collider.

Fig.6 is corrected