SU(3)-flavour breaking in octet baryon masses and axial couplings

Abstract

The lightest baryon octet is studied within a covariant and confining Nambu--Jona-Lasinio model. By solving the relativistic Faddeev equations including scalar and axialvector diquarks, we determine the masses and axial charges for ΔS = 0 transitions. For the latter the degree of violation of SU(3) symmetry arising because of the strange spectator quark(s) is found to be up to 10%.

arXiv comment9 pages, 6 figures

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• Rho meson form factors in a confining Nambu--Jona-Lasinio model
• Axial form factors of the octet baryons in a covariant quark model
• Charge Symmetry Breaking Effects in Pion and Kaon Structure
• Baryon Octet Electromagnetic Form Factors in a confining NJL model
• Testing SU(3) Flavor Symmetry in Semileptonic and Two-body Nonleptonic Decays of Hyperons
• Electroweak properties of octet baryons in light-cone quark-diquark model
• Properties of JP = 1/2+ baryon octets at low energy
• Studying Two-body Nonleptonic Weak Decays of Hyperons with Topological Diagram Approach
• Axial transition form factors of octet baryons in the perturbative chiral quark model
• Quark-Meson Coupling model based upon the Nambu-Jona Lasinio model
• Study of Kaon Decay to Two Pions
• Flavor SU(3) analysis of the charmless semileptonic $B\to PV{\ell }^{+}{\nu }_{\ell }$ decays
• Chiral Corrections to Baryon Electromagnetic Form Factors
• Neutrino mean free path in neutron stars in the presence of hyperons
• Baryons in the Nambu Jona-Lasinio models