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) Hvq and Evq with their uncertainties at zero skewness by performing a 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 Evq from FFs data solely though Hvq 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 Evq . Moreover, we calculate the gravitational FF M2 and the total angular momentum Jq 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.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.