Treatment of broken symmetry in the Faddeev approach to the strange baryon spectra

Day, Joseph P.; Papp, Z.

doi:10.1103/physrevd.85.114042

Phys. Rev. D

2012

DOI: 10.1103/physrevd.85.114042

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Treatment of broken symmetry in the Faddeev approach to the strange baryon spectra

Joseph P. Day

Z. Papp

Abstract: By solving the Faddeev equations we calculate the mass of the strange baryons in the framework of a relativistic constituent quark model. The Goldstone-boson-exchange quark-quark interaction is derived from SU (3)F symmetry, which is explicitly broken as the strange quark is much heavier. This broken symmetry can nicely be accounted for in the Faddeev framework.

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2013

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Effective Degrees of Freedom in Low-Energy Quantum Chromodynamics

Plessas

2013

Mod. Phys. Lett. A

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Confinement and spontaneous breaking of chiral symmetry are assumed to generate the governing degrees of freedom of low-energy quantum chromodynamics. On this basis a relativistic constituent-quark model is constructed and formulated along an invariant mass operator within Poincaré-invariant quantum mechanics. The model is effectively applied to the spectroscopy of all known baryons of flavors u, d, s, c and b. The mass-operator eigenstates are furthermore tested with regard to the baryon electromagnetic and axial form factors. Through using the point form of relativistic quantum mechanics, these observables are obtained in a manifestly covariant manner. For all light and strange baryon ground states the electroweak structures are reproduced either in good agreement with phenomenology or, if no experimental data exist, in consistency with results available from lattice quantum chromodynamics. It is concluded that the relativistic constituent-quark model, relying on {QQQ} Fock states only, provides a universal framework for the description of low-energy baryons. The most important ingredients are spontaneous chiral-symmetry breaking and strict relativistic invariance.

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Effective Degrees of Freedom in Low-Energy Quantum Chromodynamics

Plessas

2013

Mod. Phys. Lett. A

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Treatment of broken symmetry in the Faddeev approach to the strange baryon spectra

Cited by 1 publication

References 9 publications

Effective Degrees of Freedom in Low-Energy Quantum Chromodynamics

Effective Degrees of Freedom in Low-Energy Quantum Chromodynamics

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