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arXiv · 0805.1535

Improved radiative corrections for (e,e'p) experiments - A novel approach to multi-photon bremsstrahlung

Florian Weissbach·Kai Hencken·Daniela Kiselev·Dirk Trautmann
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Abstract

Radiative processes lead to important corrections to (e,e'p) experiments. While radiative corrections can be calculated exactly in QED and to a good accuracy also including hadronic corrections, these corrections cannot be included into data analyses to arbitrary orders exactly. Nevertheless consideration of multi-photon bremsstrahlung above the low-energy cut-off is important for many (e,e'p) experiments. To date, higher-order bremsstrahlung effects concerning electron scattering experiments have been implemented approximately by employing the soft-photon approximation (SPA). In this paper we propose a novel approach to multi-photon emission which partially removes the SPA from (e,e'p) experiments. In this combined approach one hard photon is treated exactly; and additional softer bremsstrahlung photons are taken into account resorting to the soft-photon approximation. This partial removal of the soft-photon approximation is shown to be relevant for the missing-energy distribution for several kinematic settings at MAMI and TJNAF energies.

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Florian Weissbach, Kai Hencken, Daniela Kiselev, Dirk Trautmann. 2008-12-05. Improved radiative corrections for (e,e'p) experiments - A novel approach to multi-photon bremsstrahlung. https://doi.org/10.1103/physrevc.80.024602

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