Covariant baryon charge radii and magnetic moments in a chiral constituent quark model

Abstract

The charge radii and magnetic moments of all the light and strange baryons are investigated within the framework of a constituent quark model based on Goldstone-boson-exchange dynamics. Following the point-form approach to relativistic quantum mechanics, the calculations are performed in a manifestly covariant manner. Relativistic (boost) effects have a sizeable influence on the results. The direct predictions of the constituent quark model are found to fall remarkably close to the available experimental data.

arXiv comment6 pages, 4 tables

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• Unified description of light- and strange-baryon spectra
• Covariant nucleon electromagnetic form factors from the Goldstone-boson-exchange quark model
• Effective Q-Q Interactions in Constituent Quark Models
• The reaction $\gamma p\to {\pi }^{\circ }{\gamma }^{\prime }p$ and the magnetic dipole moment of the ${\Delta }^{+}(1232)$ resonance
• Covariant axial form factor of the nucleon in a chiral constituent quark model
• Probing hadron wave functions in Lattice QCD

Cited by in corpus (23)

• The neutron and its role in cosmology and particle physics
• Quark-Model Identification of Baryon Ground and Resonant States
• Chiral extrapolation of octet-baryon charge radii
• Electromagnetic nucleon form factors in instant and point form
• Nucleon resonances in the fourth resonance region
• Spectator-model operators in point-form relativistic quantum mechanics
• Electromagnetic properties of the Delta(1232) and decuplet baryons in the self-consistent SU(3) chiral quark-soliton model
• Axial charges of octet and decuplet baryons
• Covariant calculation of mesonic baryon decays
• Structure of meson-baryon interaction vertices
• Baryon magnetic moments in large-N_c chiral perturbation theory
• Electromagnetic form factors of the baryon decuplet with flavor SU(3) symmetry breaking
• Nucleon electromagnetic form factors with non-local chiral effective Lagrangian
• Covariant calculation of nonstrange decays of strange baryon resonances
• Magnetic dipole moment of the $\Delta (1232)$ in chiral perturbation theory
• Point-form quantum field theory
• Strange form factors of nucleon with nonlocal chiral effective Lagrangian
• Axial charges of the nucleon and N* resonances
• Nucleon magnetic form factors with non-local chiral effective Lagrangian
• Baryon quadrupole moment in the 1/N(c) expansion of QCD
• Electromagnetic polarizabilities of the spin-$\frac{3}{2}$ baryons in heavy baryon chiral perturbation theory
• Flavor analysis of nucleon, $\Delta$, and hyperon electromagnetic form factors
• Studies on photo- and electro-productions of $\Lambda (1405)$ via ${\gamma }^{(\ast )}p\to K^{\ast +}{\pi }^0{\Sigma }^0$