Flavor analysis of nucleon, $\Delta$, and hyperon electromagnetic form factors

Abstract

By the analysis of the world data base of elastic electron scattering on the proton and the neutron (for the latter, in fact, on ${}^{2}H$ and ${}^{3}He$) important experimental insights have recently been gained into the flavor compositions of nucleon electromagnetic form factors. We report on testing the Graz Goldstone-boson-exchange relativistic constituent-quark model in comparison to the flavor contents in low-energy nucleons, as revealed from electron-scattering phenomenology. It is found that a satisfactory agreement is achieved between theory and experiment for momentum transfers up to $Q^2\sim$ 4 GeV${}^2$, relying on three-quark configurations only. Analogous studies have been extended to the $\Delta$ and the hyperon electromagnetic form factors. For them we here show only some sample results in comparison to data from lattice quantum chromodynamics.

References in corpus (13)

• Unified description of light- and strange-baryon spectra
• Flavor decomposition of the elastic nucleon electromagnetic form factors
• Nucleon form factors, generalized parton distributions and quark angular momentum
• Covariant nucleon electromagnetic form factors from the Goldstone-boson-exchange quark model
• Effective Q-Q Interactions in Constituent Quark Models
• Precision Electromagnetic Structure of Octet Baryons in the Chiral Regime
• Quark-Model Identification of Baryon Ground and Resonant States
• Flavor decomposition of the nucleon electromagnetic form factors
• Delta-baryon electromagnetic form factors in lattice QCD
• Precision electromagnetic structure of decuplet baryons in the chiral regime
• Electromagnetic nucleon form factors in instant and point form
• Covariant baryon charge radii and magnetic moments in a chiral constituent quark model
• Spectator-model operators in point-form relativistic quantum mechanics

Cited by in corpus (1)

• Flavour structure of the nucleon electromagnetic form factors and transverse charge densities in the chiral quark-soliton model