/ 99 03 31 3 v 1 1 0 M ar 1 99 9 Theory of electroweak interactions without spontaneous symmetry breaking

A electroweak theory without spontaneous symmetry breaking is studied in this paper. A new symmetry breaking of SU(2)L × U(1), axial-vector symmetry 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 symmetry breaking and the explicit symmetry breaking by the fermion masses. The Z boson gains mass from the axialvector symmetry breaking only. mW = 1 2g mt , m 2 Z = ρm 2 W /cos θW with ρ ≃ 1, and GF = 1 2 √ 2m2t are obtained. They are in excellent agreement with data. The 1 SU(2)L × U(1) invariant generating functional of the Green’s functions is constructed and the theory is proved to be renormalizable. The cancellation of the gauge dependent spurious poles and the ghosts is resulted in the gauge independence of the renormalized s-matrix, which is proved by using the Ward-Takahashi identity.