Improved radiative corrections for (e, e'p) experiments: Beyond the peaking approximation and implications of the soft-photon approximation |
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Authors: | F Weissbach K Hencken D Rohe I Sick D Trautmann |
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Institution: | 1. Departement für Physik und Astronomie, Universit?t Basel, CH-4056, Basel, Switzerland
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Abstract: | Analyzing (e, e'p) experimental data involves corrections for radiative effects which change the interaction kinematics and which have to be
carefully considered in order to obtain the desired accuracy. Missing momentum and energy due to bremsstrahlung have so far
often been incorporated into the simulations and the experimental analyses using the peaking approximation. It assumes that
all bremsstrahlung is emitted in the direction of the radiating particle. In this article we introduce a full angular Monte
Carlo simulation method which overcomes this approximation. As a test, the angular distribution of the bremsstrahlung photons
is reconstructed from H(e, e'p) data. Its width is found to be underestimated by the peaking approximation and described much better by the approach developed
in this work. The impact of the soft-photon approximation on the photon angular distribution is found to be minor as compared
to the impact of the peaking approximation. |
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Keywords: | 13 40 -f Electromagnetic processes and properties 14 20 Dh Protons and neutrons 21 60 -n Nuclear structure models and methods 29 85 +c Computer data analysis |
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