Trilinear anomalous gauge couplings and nonstandard fermionic couplings

In this paper we analyze the reaction $e^{+}{e}^{-}\to W^{+}{W}^{-}$ for various options of the Next Linear Colliders, by considering the possibility of deviations from the standard model induced by anomalous trilinear vector boson couplings and nonstandard fermionic couplings. We show that there are strong correlations among these parameters. By studying the high-energy behavior of the helicity amplitudes we show that the error made in linearizing the cross section in the anomalous and nonstandard couplings increases with the square of the center-of-mass energy. We consider also the option of longitudinally polarized electron beams by showing that, in this case, the restrictions on the anomalous and nonstandard parameters are greatly enhanced.