Global analysis of proton elastic form factor data with two-photon exchange corrections

Abstract

We use the world's data on elastic electron--proton scattering and calculations of two-photon exchange effects to extract corrected values of the proton's electric and magnetic form factors over the full Q^2 range of the existing data. Our analysis combines the corrected Rosenbluth cross section and polarization transfer data, and is the first extraction of G_Ep and G_Mp including explicit two-photon exchange corrections and their associated uncertainties. In addition, we examine the angular dependence of the corrected cross sections, and discuss the possible nonlinearities of the cross section as a function of epsilon.

13 pages, 3 figures, 4 tables, to be submitted to Phys. Rev. C

References in corpus (4)

• Contribution of spin 1/2 and 3/2 resonances to two-photon exchange effects in elastic electron-proton scattering
• Precise determination of low-Q nucleon electromagnetic form factors and their impact on parity-violating e-p elastic scattering
• Chiral extrapolation of nucleon magnetic form factors
• Two-photon exchange at low Q^2

Cited by in corpus (5)

• Empirical transverse charge densities in the nucleon and the nucleon-to-$\Delta$ transition
• Two-photon exchange in dispersion approach
• Proton Electromagnetic Form Factor Ratios at Low Q^2
• Overview of nucleon structure studies
• On the physics behind the form factor ratio ${\mu }_p{G}_E^p(Q^2)/G_M^p(Q^2)$