Polarization effects in the reaction image in the presence of two-photon exchange Original Research Article

Polarization observables for the reaction View the MathML source are given in terms of three independent complex amplitudes, in presence of two photon exchange. General expressions for the differential cross section and the polarization observables are given and model independent properties are derived. Polarization effects depending on the polarization of the antiproton beam, the target and of the electron in the final state, have been calculated.