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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-photonexchange corrections. The data include a wide and updated range of the electricand magnetic form factors (FFs) of the proton and neutron. As a result, we findthat there are no enough constraints on GPDs $ E_v^q $ from FFs data solelythough $ H_v^q $ are well constrained. By including the new data of the chargeand magnetic radius of the nucleon in the analysis, we show that they put newconstraints on the final GPDs, especially on $ E_v^q $. Moreover, we calculatethe gravitational FF $ M_2 $ and the total angular momentum $ J^q $ using theextracted GPDs and compare them with the FFs obtained from the light-cone QCDsum rules (LCSR) and Lattice QCD. We show that our results are interestingly ina good consistency with the pure theoretical predictions.

physical review. d/physical review. d.

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