Vacuum Polarization Interaction Between Protons, Effective Range Parameters, and Triplet Phases

Abstract

The scattering cross section is formulated in terms of the Coulomb, vacuum polarization, and nuclear amplitudes. Comparison is made with available data; the search variables being the effective range parameters and a strength factor A for the vacuum polarization, as well as two triplet parameters. The strength factor A attained the value 0·92 at optimum fit and new values of the effective range parameters are obtained. Scattering experiments are suggested that should have appreciable sensitivity to the vacuum polarization amplitude. Estimates of the triplet phases and spin polarization are given.