Charge asymmetry in elastic scattering of massive leptons on protons

Understand

The charge asymmetry due to higher-order QED corrections in elastic lepton-proton scattering is estimated without employing the ultrarelativistic approximation.

• Our calculation is performed by generalizing the soft-photon approximation approach suggested by Tsai.
• Corresponding loop integrals that take a form of Passarino-Veltman scalar three-point functions are calculated analytically without neglecting the mass of the lepton.
• Our results provide model-independent charge asymmetry predictions for scattering of unpolarized and massive leptons on proton targets.