Corrections to oblique parameters induced by anomalous vector boson couplings

Abstract

We study quadratically divergent radiative corrections to the oblique parameters at LEP1 induced by non-standard vector boson self-couplings. We work in the Stueckelberg formalism and regulate the divergences through a gauge-invariant higher derivative scheme. Using consistency arguments together with the data we find a limit on the anomalous magnetic moment Delta kappa of the W-boson, |Delta kappa| <= 0.26.

Comments: 32 pages, LaTeX; cross reference corrected, minor beautifications, version to be published in Phys.Rev.D