On radiative corrections to polarization observables in electron-proton scattering

Abstract

We consider radiative corrections to polarization observables in elastic electron-proton scattering, in particular, for the polarization transfer measurements of the proton form factor ratio $\mu G_E/G_M$. The corrections are of two types: two-photon exchange (TPE) and bremsstrahlung (BS); in the present work we pay special attention to the latter. Assuming small missing energy or missing mass cut-off, the correction can be represented in a model-independent form, with both electron and proton radiation taken into account. Numerical calculations show that the contribution of the proton radiation is not negligible. Overall, at high $Q^2$ and energies the total correction to $\mu G_E/G_M$ grows, but is dominated by TPE. At low energies both TPE and BS may be significant; the latter amounts to ~ 0.01 for some reasonable cut-off choices.

arXiv comment10 pages, 4 figures

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Cited by in corpus (5)

• Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering
• Second-Order Leptonic Radiative Corrections for Lepton-Proton Scattering
• Two photon exchange in elastic electron scattering off hadronic systems
• Reliability Analysis of the Results of the Known Experiments on Measuring of the Sachs Form Factor Ratio Using the Rosenbluth Technique. Polarization of the Final Proton in the $e\vec{p}\to e\vec{p}$ Elastic Process
• Axial meson contribution to proton form factors