Second-Order Leptonic Radiative Corrections for Lepton-Proton Scattering

Understand

The interpretation of high-precision lepton-nucleon scattering experiments requires the knowledge of higher-order radiative corrections.

• We present a calculation of the cross section for unpolarized lepton-proton scattering including leptonic radiative corrections up to second order, including one- and two-loop corrections, radiation of one and two photons and one-loop corrections for one-photon radiation.
• Numerical results are given for the planned P2 experiment at the MESA facility in Mainz, and some results are also discussed for Qweak and the suggested MUSE experiment.