The eγ→ Wν_e Process Using Axial Gauge

Abstract

The Standard Model prescribes a definite Lagrangian for the coupling of the W-boson to the photon. Measuring the coupling constant will test an important ingredient of the Model i.e., the verification of non-Abelian gauge structure of the Standard Model. Using the process eγ → Wν we study the most general C and P conserving vertex in e⁺e^- collisions at a future 500GeV collider. This vertex contains two parameters, the anomalous magnetic moment κ and the quadrupole moment λ . For the process eγ → Wν we present analytical expressions for the differential cross-section for arbitrary values of κ and λ which explicitly demonstrate the presence of a zero at u=0 in the Standard Model.