Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-05-11
Phys.Rev.C80:024602,2009
Physics
Nuclear Physics
Nuclear Theory
10 pages, 21 figures
Scientific paper
10.1103/PhysRevC.80.024602
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.
Hencken Kai
Kiselev Daniela
Trautmann Dirk
Weissbach Florian
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