Determination of the generalized parton distributions through the analysis of the world electron scattering data considering two-photon exchange corrections

Abstract

We determine the valence generalized parton distributions (GPDs) $H_v^q$ and $E_v^q$ with their uncertainties at zero skewness by performing a ${\chi }^2$ analysis of the world electron scattering data considering two-photon exchange corrections. The data include a wide and updated range of the electric and magnetic form factors (FFs) of the proton and neutron. As a result, we find that there are no enough constraints on GPDs $E_v^q$ from FFs data solely though $H_v^q$ are well constrained. By including the new data of the charge and magnetic radius of the nucleon in the analysis, we show that they put new constraints on the final GPDs, especially on $E_v^q$. Moreover, we calculate the gravitational FF $M_2$ and the total angular momentum $J^q$ using the extracted GPDs and compare them with the FFs obtained from the light-cone QCD sum rules (LCSR) and Lattice QCD. We show that our results are interestingly in a good consistency with the pure theoretical predictions.

20 pages, 13 figures, and 5 tables

References in corpus (9)

• Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs
• A first unbiased global determination of polarized PDFs and their uncertainties
• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Proton and neutron electromagnetic form factors and uncertainties
• Measurement of the proton electric to magnetic form factor ratio from \vec ^1H(\vec e, e'p)
• Interplay of Spin and Orbital Angular Momentum in the Proton
• Proton G_E/G_M from beam-target asymmetry
• Nucleon axial form factor from generalized parton distributions
• Determination of generalized parton distributions through a simultaneous analysis of axial form factor and wide-angle Compton scattering data

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