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arXiv · hep-ph/9805443

Complete O(alpha) QED corrections to polarized Compton scattering

A. Denner·S. Dittmaier
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Abstract

The complete QED corrections of O(alpha) to polarized Compton scattering are calculated for finite electron mass and including the real corrections induced by the processes e^- gamma -> e^- gamma gamma and e^- gamma -> e^- e^- e^+. All relevant formulas are listed in a form that is well suited for a direct implementation in computer codes. We present a detailed numerical discussion of the O(alpha)-corrected cross section and the left-right asymmetry in the energy range of present and future Compton polarimeters, which are used to determine the beam polarization of high-energetic e^+- beams. For photons with energies of a few eV and electrons with SLC energies or smaller, the corrections are of the order of a few per mille. In the energy range of future e^+e^- colliders, however, they reach 1-2% and cannot be neglected in a precision polarization measurement.

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A. Denner, S. Dittmaier. 1998-05-25. Complete O(alpha) QED corrections to polarized Compton scattering. https://doi.org/10.1016/s0550-3213(98)00767-6

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