Single W-boson production in e-\gamma colliders

Single $W$-boson production in $e^-\gamma$ 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 $\kappa_{ \gamma},$ $\lambda_{ \gamma}$ at the Next Linear Collider with $\sqrt{s_{ e\gamma }}=420$ 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.