Probing the Single Production of First-Generation Singlet Vector-like Leptons at Future $e^{+}{e}^{-}$ Colliders

Yao-Bei Liu, Stefano Moretti

We study the single production of first-generation weak-isosinglet vector-like leptons (VLLs) at future $e^{+}{e}^{-}$ colliders, considering the channels $e^{+}{e}^{-}\to e^{\pm }{E}^{\mp }$ wit…