Effective Operators and Extended Symmetry


Abstract in English

In this note we expand on our previous study of the implications of LEP1 results for future colliders. We extend the effective operator-based analysis of De Rujula et al. to a larger symmetry group, and show at which cost their expectations can be relaxed. Of particular interest to experiment is a rephrasing of our previous results in terms of the Renard et al. parametrization for the gauge boson self-couplings (slightly extended to include $delta g_{gamma}$). We suggest the use of a ($delta g_{gamma}$, $delta g_{Z}$) plot to confront the expectations of various models.

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