Radiative Corrections to Decay Processes Mediated by Vector Bosons

Abstract

The lowest order electromagnetic corrections to $\beta$ and $\mu$ decay have been calculated in an intermediate vector-boson theory. Assuming universal coupling, the $\mu$ lifetime agrees with the experimental value if the boson's mass is chosen to be that of a $K$ meson. The results are relatively insensitive to the value chosen for the cutoff.