Phenomenology of single-Wproduction ineγcollisions

We have studied the phenomenology of single-charged-weak-boson production in eγ collisions. The cross sections are comparable to the $e^{+}$ $e^{\mathrm{-}}$→$W^{+}$ $W^{\mathrm{-}}$ cross section expected at the LEP II $e^{+}$ $e^{\mathrm{-}}$ collider at CERN once branching fractions for W decay into final-state fermions are taken into account. Using the hadronic decay modes of the W we estimate that $M_W$ and ${\Gamma }_W$ could be measured to similar precision as LEP II experiments using comparable integrated luminosities. However, the process eγ→W${\nu }_e$ is especially sensitive to the anomalous magnetic moment of the W, ${\kappa }_{\gamma }$, and as such offers a good opportunity to test the gauge structure of the standard model at the tree level and at the one-loop level. Our conclusion is that the feasibility of building a high-luminosity eγ collider is definitely worth studying.