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%.

9 pages, 6 figures

References in corpus (7)

• Ab-initio Determination of Light Hadron Masses
• Light hadron spectroscopy using domain wall valence quarks on an Asqtad sea
• Role of diquark correlations and the pion cloud in nucleon elastic form factors
• Transversity quark distributions in a covariant quark-diquark model
• Resolution of the Proton Spin Problem
• First Calculation of Hyperon Axial Couplings from Lattice QCD
• Polarized structure functions of nucleons and nuclei

Cited by in corpus (6)

• Baryons as relativistic three-quark bound states
• Axial transition form factors of octet baryons in the perturbative chiral quark model
• Study of Kaon Decay to Two Pions
• Flavor SU(3) analysis of the charmless semileptonic $B\to PV{\ell }^{+}{\nu }_{\ell }$ decays
• Baryons in the Nambu Jona-Lasinio models
• Neutrino mean free path in neutron stars in the presence of hyperons