  An electroweak model in which the masses of the W and Z bosons and the
fermions are generated by quantum loop graphs through a symmetry breaking is
investigated. The model is based on a regularized quantum field theory in which
the quantum loop graphs are finite to all orders of perturbation theory and the
massless theory is gauge invariant, Poincare invariant, and unitary. The
breaking of the electroweak symmetry SU_L(2) X U_Y(1) is achieved without a
Higgs particle. A fundamental energy scale \Lambda_W (not to be confused with a
naive cutoff) enters the theory through the regularization of the Feynman loop
diagrams. The finite regularized theory with \Lambda_W allows for a fitting of
low energy electroweak data. \Lambda_W ~ 542 GeV is determined at the Z pole by
fitting it to the Z mass m_Z, and anchoring the value of \sin^2\theta_w to its
experimental value at the Z pole yields a prediction for the W mass m_W that is
accurate to about 0.5% without radiative corrections. The scattering amplitudes
for W_LW_L -> W_LW_L and e+e- -> W_L^+W_L^- processes do not violate unitarity
at high energies due to the suppression of the amplitudes by the running of the
coupling constants at vertices. There is no Higgs hierarchy fine-tuning problem
in the model. The unitary tree level amplitudes for W_LW_L -> W_LW_L scattering
and e+e- -> W_L^+W_L^- annihilation, predicted by the finite electroweak model
are compared with the amplitudes obtained from the standard model with Higgs
exchange. These predicted amplitudes can be used to distinguish at the LHC
between the standard electroweak model and the Higgsless model.
