Electromagnetic form factors of the nucleon: new fit and analysis of uncertainties

Abstract

Electromagnetic form factors of proton and neutron, obtained from a new fit of data, are presented. The proton form factors are obtained from a simultaneous fit to the ratio ${\mu }_p{G}_{Ep}/G_{Mp}$ determined from polarization transfer measurements and to $ep$ elastic cross section data. Phenomenological two-photon exchange corrections are taken into account. The present fit for proton was performed in the kinematical region $Q^2\in (0,6)$ GeV${}^2$. Both for protons and neutrons we use the latest available data. For all form factors the uncertainties and correlations of form factor parameters are investigated with the ${\chi }^2$ method.

18 pages, 12 figures

References in corpus (11)

• Nucleon Electromagnetic Form Factors
• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Nucleon electromagnetic form factors
• Two-Photon Physics in Hadronic Processes
• Vector and Axial Nucleon Form Factors:A Duality Constrained Parameterization
• Measurement of the proton electric to magnetic form factor ratio from \vec ^1H(\vec e, e'p)
• Proton G_E/G_M from beam-target asymmetry
• The Charge Form Factor of the Neutron at Low Momentum Transfer from the ${}^2\vec{\mathrm{H}}(\vec{\mathrm{e}},{\mathrm{e}}^{\prime }\mathrm{n})\mathrm{p}$ Reaction
• Extraction of the Neutron Magnetic Form Factor from Quasi-Elastic 3He(pol)(e(pol),e') at Q^2 = 0.1 - 0.6 (GeV/c)^2
• Precise determination of low-Q nucleon electromagnetic form factors and their impact on parity-violating e-p elastic scattering
• Is there model-independent evidence of the two-photon-exchange effect in the electron-proton elastic scattering cross section?

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• Influence of cross-sectional uncertainty on sensitivity studies of DUNE and T2HK experiments