Some Consequences of the Possible Modifications of Quantum Electrodynamics

To separate electron from proton form factors in electron-proton scattering experiments requires the measurement of spin-dependent effects such as polarization transfer, depolarization, etc. To find which of these measurements is most critically affected by the structure of the electron, we have calculated the final-state electron-beam and proton-target polarizations for the one-photon-exchange scattering of a polarized beam and initially unpolarized target, and the converse situation.