Bounds on Anomalous Gauge Boson Couplings From Partial Z Widths at LEP

Abstract

We place bounds on anomalous gauge boson couplings from LEP data with particular emphasis on those couplings which do not contribute to $Z$ decays at tree level. We use an effective field theory formalism to compute the one-loop corrections to the $Z\to \overline{f}f$ decay widths resulting from non-standard model three and four gauge boson vertices. We find that the precise measurements at LEP constrain the three gauge boson couplings at a level comparable to that obtainable at LEPII and LHC.

LATEX, 22 pages, 5 figures (appended as uuencoded compressed tar file), BNL-60949

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