Interpretation of the Flavor Dependence of Nucleon Form Factors in a Generalized Parton Distribution Model

Abstract

We give an interpretation of the $u$ and $d$ quarks contributions to the nucleon electromagnetic form factors for values of the four-momentum transfer in the multi-GeV region where flavor separated data have been recently made available. The data show, in particular, a suppression of $d$ quarks with respect to $u$ quarks at large momentum transfer. %and constant ratios of the flavor dependent Pauli to Dirac form factors ratios. This trend can be explained using a reggeized diquark model calculation of generalized parton distributions, thus providing a correlation between momentum and coordinate spaces, both of which are necessary in order to interpret the partonic substructure of the form factors. We extend our discussion to the second moments of generalized parton distributions which are believed to contribute to partonic angular momentum.

22 pages, 19 figures; results and figures added and changed, tables added, formulae added, major rewriting of text

References in corpus (15)

• High-precision determination of the electric and magnetic form factors of the proton
• Transverse-momentum distributions in a diquark spectator model
• Nucleon electromagnetic form factors
• Flavor decomposition of the elastic nucleon electromagnetic form factors
• Nucleon form factors, generalized parton distributions and quark angular momentum
• Parton Distribution Benchmarking with LHC Data
• Measurements of the Electric Form Factor of the Neutron up to Q2=3.4 GeV2 using the Reaction He3(e,e'n)pp
• Interplay of Spin and Orbital Angular Momentum in the Proton
• Measurement of Azimuthal Asymmetries With Respect To Both Beam Charge and Transverse Target Polarization in Exclusive Electroproduction of Real Photons
• Flavor decomposition of the nucleon electromagnetic form factors
• Singular Charge Density at the Center of the Pion?
• Generalized Parton Distributions from Hadronic Observables: Zero Skewness
• Measurement of the neutron electric to magnetic form factor ratio at Q2 = 1.58 GeV2 using the reaction 3He(e,e'n)pp
• Generalized Parton Distributions from Hadronic Observables: Non-Zero Skewness
• The neutron negative central charge density: an inclusive-exclusive connection

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