New dynamical symmetry breaking in eletroweak theory

A new dynamical symmetry breaking of $SU(2)_{L}\times U(1)$ caused by the combination of the axial-vector component and the fermion mass is found in electroweak theory. We obtain (m^{2}_{W}={1/2}g^{2}m^{2}_{t}) and (m^{2}_{Z}=ρm^{2}_{W}/cos^{2}θ_{W}) with (ρ\simeq 1), (G_{F}={1/2 \sqrt{2}m^{2}_{t}})}}). Two fixed gauge fixing terms for W and Z boson fields are dynamically generated. Massive neutrinos are required.

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