ABSTRACT
Actually to perform the calculation of the radiative corrections requires the renormalisation of the electroweak theory. Since the theory is renormalisable, the infinities which occur when evaluating Feynman diagrams may be absorbed into the various renormalised parameters of the theory to obtain finite predictions involving these renormalised parameters. The major simplification which characterises Sirlin’s scheme is achieved by working throughout with unrenormalised fields. In other words, all wave function renormalisation constants are chosen to be unity. The immediate objection to such an approach is that the renormalised Green functions are then in general divergent. The form of the renormalised mass Lagrangian is the same as that of the unrenormalised mass Lagrangian with the replacement of the bare masses by the renormalised masses. The calculations which have to be performed to carry out the renormalisation of the electroweak theory are outlined.
