Prospects for the determination of the top-quark Yukawa coupling at future $e^{+}{e}^{-}$ colliders

Stefano Boselli, Ross Hunter, Alexander Mitov

We estimate the sensitivity to the top-quark Yukawa coupling $y_t$ at future $e^{+}{e}^{-}$ colliders. We go beyond the standard approach that focuses on $t\bar{t}h$ production and consi…