Determination of two-photon exchange amplitudes from elastic electron-proton scattering data

Abstract

Using the available cross section and polarization data for elastic electron-proton scattering, we provide an extraction of the two-photon exchange amplitudes at a common value of four-momentum transfer, around Q^2 = 2.5 GeV^2. This analysis also predicts the e^+ p / e^- p elastic scattering cross section ratio, which will be measured by forthcoming experiments.

4 pages, 5 figures, updated error analysis

References in corpus (7)

• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to Q^2 = 8.5 GeV^2
• Two-Photon Physics in Hadronic Processes
• Search for effects beyond the Born approximation in polarization transfer observables in $\vec{e}p$ elastic scattering
• Two-photon exchange in elastic electron-proton scattering : QCD factorization approach
• Perturbative QCD predictions for two-photon exchange
• Model-independent extraction of two-photon effects in elastic electron-proton scattering

Cited by in corpus (23)

• The electric and magnetic form factors of the proton
• Proton and neutron electromagnetic form factors and uncertainties
• The proton charge radius
• Two-photon exchange in elastic electron-proton scattering
• Hard Two-Photon Contribution to Elastic Lepton-Proton Scattering: Determined by the OLYMPUS Experiment
• Polarization Transfer Observables in Elastic Electron Proton Scattering at $Q^2=$2.5, 5.2, 6.8, and 8.5 GeV${}^2$
• Subtracted dispersion relation formalism for the two-photon exchange correction to elastic electron-proton scattering: comparison with data
• Two-photon exchange corrections to elastic electron-proton scattering at large momentum transfer within the SCET approach
• Two-photon exchange contribution to elastic $e^{-}$-proton scattering: Full dispersive treatment of $\pi N$ states and comparison with data
• Reexamination of phenomenological two-photon exchange corrections to the proton form factors and e+-p scattering
• $\Delta (1232)$ Resonance Contribution to Two-Photon Exchange in Electron-Proton Scattering Revisited
• Dispersion relation formalism for the two-photon exchange correction to elastic muon-proton scattering: elastic intermediate state
• Comparison of Neural Network and Hadronic Model Predictions of Two-Photon Exchange Effect
• Demonstration of a novel technique to measure two-photon exchange effects in elastic $e^{\pm }p$ scattering
• Two-photon exchange corrections to elastic $e^{-}$-proton scattering: Full dispersive treatment of $\pi N$ states at low momentum transfers
• Two-Photon Exchange Effect Studied with Neural Networks
• Phenomenological extraction of two-photon exchange amplitudes from elastic electron-proton scattering cross section data
• How much two-photon exchange is needed to resolve the proton form factor discrepancy?
• Meson exchange effects in elastic $ep$ scattering at loop level and the electromagnetic form factors of the proton
• Two photon exchange in elastic electron scattering off hadronic systems
• Impact of new particles on the ratio of Electromagnetic form factors
• Super-Rosenbluth Measurements with Electrons and Positrons
• Radiative corrections in proton--antiproton annihilation to electron-positron and their application to the PANDA experiment