Analyses of muon electrodynamic tests

Summary  A simple model for a possible modification of the fermion propagator in quantum electrodynamics is presented along with the accompanying change in the vertex function directated by the WardTakahashi identity in order to maintain current conservation. This model is used to compute corrections to the calculations of the muong — 2 value, to the μ-pair production and to the muon-proton scattering cross-sections. The purpose is to show by explicit calculation, and thereby to emphasize, that these are independent and complementary probes of the theory. Therefore, each measurement should be carried out to a maximum obtainable accuracy independent of the results found in the other two.