Importance of unitarity in the search for heavy neutrinos in $e^{+}{e}^{-}\to W^{+}{W}^{-}$

G. A. Chachava, S. I. Godunov

We study the process $e^{+}{e}^{-}\to W^{+}{W}^{-}$ with the aim of estimating the prospects for observing heavy neutrinos contributions at future $e^{+}{e}^{-}$-colliders. In this work, we conside…