Probing $WWγ$ Couplings from $σ_{tot}(W)/σ_{tot}(Z)$ in High Energy ep Collisions

Abstract

We investigate the sensitivity of total cross sections of $e+p \rightarrow W,Z$ to CP-conserving non-standard $WWγ$ couplings. We include all the important production mechanisms and study the dependence of the total $W$ cross sections on the anomalous $WWγ$ couplings, $κ$ and $λ$. We argue that the ratio of $W$ and $Z$ production cross sections is particularly well suited, being relatively insensitive to uncertainties in the theoretical and experimental parameters.