Probing the CP properties of top Yukawa coupling at an $e^{+}{e}^{-}$ collider

Kaoru Hagiwara, Hiroshi Yokoya, Ya-Juan Zheng

We study consequences of CP violation in the $ht\bar{t}$ Yukawa coupling through the process $e^{+}{e}^{-}\to$ $h(125)t\bar{t}$. The helicity amplitudes are calculated in the $t\bar{t}$…