W-PAIR PRODUCTION IN THE PROCESS E(-)-]LVQ(Q)OVER-BAR' AND MEASUREMENT OF THE WW-GAMMA AND WWZ COUPLINGS()E()

We perform a detailed analysis of the process e(+)e(-) --> lvq (q) ove r bar' where we include all tree level Feynman diagrams that contribut e to this final state. We study the sensitivity of this process to ano malous trilinear gauge boson couplings of the WW gamma and WWZ vertice s using two popular parametrizations. We use a maximum likelihood anal ysis of a five-dimensional differential cross section based on the W a nd W decay product angular distributions. We concentrate on CERN LEP 2 00 energies, taking root s = 175 GeV, and energies appropriate to the proposed Next Linear Collider, a high energy e(+)e(-) collider with ce nter-of-mass energies root s = 500 and 1 TeV. At 175 GeV, g(1)(Z) can be measured to about +/-0.2, kappa(Z) to +/-0.2, and kappa(y) to +/-0. 3, lambda(Z) to +/-0.2 and lambda(y) to +/-0.3 at 95% C.L. assuming 50 0 pb(-1) integrated luminosity. Although these will be improvements of existing measurements they are not sufficiently precise to test the s tandard model at the loop level and are unlikely to see deviations fro m SM expectations. At 500 GeV with 50 fb(-1) integrated luminosity, g( 1)(Z) can be measured to about +/-0.01, kappa(Z) and kappa(y) to +/-0. 005 and lambda(Z) and lambda(y) to +/-0.003 at 95% C.L. while at 1 TeV with 200 fb(-1) integrated luminosity, kappa(V) and lambda(V) can be measured to about +/-0.005 and +/-10(-3), respectively. The 500 GeV me asurements will be at the level of loop contributions to the couplings and may show hints of new physics while the 1 TeV should be sensitive to new physics at the loop level.