MEASUREMENT OF THE WW-GAMMA AND WWZ COUPLINGS AT LEP200 - THE BENEFITS OF HIGHER ENERGY

We performed a detailed analysis of the process e(+)e(-) --> <(l nu q( q')over bar> to determine its sensitivity to anomalous trilinear gauge boson couplings of the WW gamma and WWZ vertices and how the sensitiv ity varies with energy and integrated luminosity. We included all tree level Feynman diagrams that contribute to this final state and used a maximum likelihood analysis of a five dimensional differential cross- section based on the W and W decay product angular distributions. For constant luminosity, increasing root s from 175 GeV to 192 GeV (220 Ge V) improves the measurement sensitivity by a factor of 1.5-2 (2-3) dep ending on the parameter measured. However, the lower luminosity expect ed at higher root s will reduce these improvements. In any case, the s ensitivities for root(s)=175 GeV and L=500 pb(-1) of delta g(1)(Z) +/- 0.22, delta(KZ)=+/-0.20, delta kappa(gamma)=+/-0.27, delta L(9L)=+/-5 5, and delta L(9R)=(+330)(-230) are likely to be at least an order of magnitude too big to see the effects of new physics.