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arXiv · 0812.3539

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

W. M. Alberico·S. M. Bilenky·C. Giunti·K. M. Graczyk
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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 $μ_p G_{Ep}/G_{Mp}$ 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 $χ^2$ method.

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W. M. Alberico, S. M. Bilenky, C. Giunti, K. M. Graczyk. 2009-06-08. Electromagnetic form factors of the nucleon: new fit and analysis of uncertainties. https://doi.org/10.1103/physrevc.79.065204

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