Is the Standard Model Renormalizable?

Abstract

In this paper, we study the renormalizability of the Standard Model in the Landau gauge. On the basis of the Ward-Takahashi identities, we derive exact expressions for the physical masses of the W and Z as well as the renormalized coupling constants in the theory. We show that it is impossible to make all these renormalized quantities finite. Thus the quantum theory of the Standard Model with the divergent amplitudes obeying the Ward-Takahashi identities is not renormalizable.