The two-photon exchange amplitude in ep and eμ elastic scattering: A comparison
/ Authors
/ Abstract
In this note we give arguments in favor of the statement that the contribution of the box diagram calculated for electron-muon elastic scattering can be considered an upper limit to electron-proton scattering. As an exact QED calculation can be performed, this statement is useful for constraining model calculations involving the proton structure.
Journal: Physics of Particles and Nuclei Letters