Complete NLO QED radiative corrections to elastic lepton-proton scattering including TPE contributions with momentum-dependent form factors and numerical impact assessment.
First measurement of proton's charge form factor at very low $Q^2$ with initial state radiation
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abstract
We report on a new experimental method based on initial-state radiation (ISR) in e-p scattering, in which the radiative tail of the elastic e-p peak contains information on the proton charge form factor ($G_E^p$) at extremely small $Q^2$. The ISR technique was validated in a dedicated experiment using the spectrometers of the A1-Collaboration at the Mainz Microtron (MAMI). This provided first measurements of $G_E^p$ for $0.001\leq Q^2\leq 0.004 (GeV/c)^2$.
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Radiative Corrections to Elastic Lepton-Proton Scattering with Focus on Two-Photon-Exchange Diagrams
Complete NLO QED radiative corrections to elastic lepton-proton scattering including TPE contributions with momentum-dependent form factors and numerical impact assessment.