The parity-violating asymmetry including QED corrections in high-energy electron-nucleus collisions
Abstract
The parity-violating asymmetry, accounting for the vector and axial-vector vertex plus self-energy correction as well as for vacuum polarization, is calculated nonperturbatively by solving the corresponding Dirac equation for the electronic scattering states. Investigating the nuclei 27Al, 48Ca and 208Pb at collision energies in the GeV region and at forward scattering angles matching the experimental geometries, it is found that the combined QED effects change the parity-violating asymmetry by less than one percent. The same is true for 12C and 208Pb at an energy of 150 MeV.
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