Test of $CP$ Violating Neutral Gauge Boson Vertices in $e^{+}{e}^{-}\to \gamma Z$

Abstract

Forward-backward asymmetry in the process $e^{+}{e}^{-}\to \gamma Z$ is proposed as a test for $CP$--violating anomalous $\gamma \gamma Z$ and $\gamma ZZ$ couplings. Longitudinally polarized electron beams may be used to disentangle the effects of these couplings. We estimate possible limits that can be obtained from $e^{+}{e}^{-}$ colliders at centre-of-mass energies of 200 GeV and 500 GeV.

Comments: 12 pages (LaTeX), 4 figures (uuencoded postscript file submitted through `figures option'), MPI preprint MPI-PhT/94-21 (Original version corrupted by mailer. Hence the replacement.)