Theory of electroweak interactions without spontaneous symmetry breaking

An electroweak theory without spontaneous symmetry breaking is studied in t his paper. A new symmetry breaking of SU(2)(L) x U(1), axial-vector symmetr y breaking, caused by the combination of the axial-vector component of the intermediate boson and the fermion mass is found in electroweak theory. The mass of the W boson is resulted in the combination of the axial-vector sym metry breaking and the explicit symmetry breaking by the fermion masses. Th e Z boson gains mass from the axial-vector symmetry breaking only. m(W)(2) = 1/2g(2)m(t)(2), m(Z)(2) = m(W)(2) /cos(2)thetaw, and G(F) = 1/2 root 2m(t )(2) are obtained. They are in excellent agreement with data. The SU(2)(L) x U(1) invariant generating functional of the Green functions is constructe d and the theory is proved to be renormalizable.