Hyperon elastic electromagnetic form factors in the space-like momentum region

Abstract

We present a calculation of the electric and magnetic form factors of ground-state octet and decuplet baryons including strange quarks. We work with a combination of Dyson-Schwinger equations for the quark propagator and covariant Bethe-Salpeter equations describing baryons as bound states of three (non-perturbative) quarks. Our form factors for the octet baryons are in good agreement with corresponding lattice data at finite $Q^2$; deviations in some isospin channels for the magnetic moments can be explained by missing meson cloud effects. At larger $Q^2$ our quark core calculation has predictive power for both, the octet and decuplet baryons.

14 pages, 6 figures, 7 tables. Version 2: layout improved. Version 3: Matches the published version

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Cited by in corpus (17)

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• Spectrum of light- and heavy-baryons
• On light baryons and their excitations
• Recent developments in bound-state calculations using the Dyson-Schwinger and Bethe-Salpeter equations
• The electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model
• Electromagnetic Transition Form Factors of Baryon Resonances
• Electromagnetic transition form factors of baryons in the space-like momentum region
• On the effect of resonances in the quark-photon vertex
• Baryon Octet Electromagnetic Form Factors in a confining NJL model
• Electromagnetic form factors of the baryon decuplet with flavor SU(3) symmetry breaking
• Electromagnetic form factors of ${\Lambda }_b$ in the Bethe-Salpeter equation approach
• Progress in the calculation of nucleon transition form factors
• A covariant model for the decuplet to octet Dalitz decays
• Space-like Electromagnetic Form Factors of Lambda- and Sigma-Baryons from Quark-Diquark Faddeev Equations
• On the low-energy spectrum of an SU(2) gauge theory with dynamical fermions
• Electromagnetic form factors of ${\Lambda }_c$ in the Bethe-Salpeter equation approach
• Quark-photon vertex from lattice QCD in Landau gauge