Tests of three-vector-boson nonstandard couplings

We have examined the bounds on nonstandard WWV couplings that can be extracted from the existing low-energy data, without assuming some couplings are zero; we use a regularization procedure for loops that gives a gauge-invariant limit and results that do not depend on how integrations are performed. These bounds turn out to be only a little bit better than those given by unitarity requirements; in addition, some relations between parameters can be extracted. The results should be interpreted to mean that the WWZ and WWγ vertices are not very well constrained at present, though very large deviations from standard-model values are not allowed. We have also examined how well the measurements of the $W^{+}$ $W^{\mathrm{-}}$ cross section at the CERN $e^{+}$ $e^{\mathrm{-}}$ collider LEP II, and WZ and Wγ production at hadron colliders, can restrict the values of the anomalous WWV couplings. We found that significant improvement, with respect to the bounds set from low-energy experiments and unitarity, can be achieved at an upgraded Fermilab Tevatron, at LEP II, and at a 400-GeV $e^{+}$ $e^{\mathrm{-}}$ collider. Considerably better bounds can be set from experiments at the CERN Large Hadron Collider and at the Superconducting Super Collider.