ELECTROWEAK THEORY OF SU(3)XU(1)

An electroweak model of the SU(3) X U(1) gauge group is studied. By matching the gauge coupling constant we obtain the mass of the new neutral gauge boson to be less than 3.1 TeV. Including the constraint from muon decay, the allowed ranges of the new gauge boson masses are 1.3 TeV less-than-or-equal-to M(Z)2 less-than-or-equal-to 3.1 TeV and 270 GeV less-than-or-equal-to M(Y) less-than-or-equal-to 550 GeV. Within these mass ranges, the decay Z2 --> Y++Y-- with Y+/-+/- --> 2l+/-(l=e,mu,tau) is allowed, providing a spectacular signature at future colliders. The low energy experiments further constrain the Z-Z' mixing angle to be -5 X 10(-3) less-than-or-equal-to theta less-than-or-equal-to 7 X 10(-4).