Single W-boson production in e-γcolliders

Abstract

Single $W$-boson production in $e^-γ$ collisions with polarized beams is investigated. In the framework of the Standard Model the updated estimates for the measurement precision of photon anomalous coupling parameters $ κ_{ γ},$ $ λ_{ γ}$ at the Next Linear Collider with $ \sqrt{s_{ eγ}}=420$ GeV are obtained. The production of right-handed gauge bosons $ W^-_{ 2 }$ in this collision mode is also analysed. If the associated neutrino is light, the channel would give the best discovery reach for $ W^-_{ 2 }$ in the Next Linear Collider.