Single W-boson production in e-γcolliders

Abstract

Single $W$-boson production in $e^{-}{\hat{I}}^3$ 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 $\hat{I}{º}_{{\hat{I}}^3},$ $\hat{I}{»}_{{\hat{I}}^3}$ at the Next Linear Collider with $\sqrt{s_{e{\hat{I}}^3}}=420$ 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.

10 pages, latex, 3 .ps figures included, talk given in the workshop "Physics with Linear Colliders," Gran Sasso, 1995