Octet and Decuplet Baryons in a Covariant and Confining Diquark-Quark Model

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dc.creatorOettel, M.
dc.creatorHellstern, G.
dc.creatorAlkofer, R.
dc.creatorReinhardt, H.
dc.date1998-05-29
dc.date1998-07-10
dc.date.accessioned2026-07-07T11:11:43Z
dc.date.available2026-07-07T11:11:43Z
dc.descriptionThe baryon octet and decuplet masses and Bethe-Salpeter vertex and wave functions are calculated in the ladder approximation to the quark exchange between a scalar or axialvector diquark and a constituent quark. These functions reflecting full Lorentz covariance are given in terms of an expansion in Gegenbauer polynomials. In the rest frame of the baryon, a complete partial wave decomposition of the Bethe-Salpeter wave function is performed. The confinement of quarks and diquarks is implemented via a parametrisation of the corresponding propagators. We also discuss some aspects of the momentum routing in the ladder approximation to the Bethe-Salpeter equation. Numerical results for the octet and decuplet masses with broken flavour SU(3) in the conserved isospin limit are presented.
dc.description36 pages, 10 figures, LaTeX-Style article using epsfig. Bug in program code detected; numerical results changed slightly, i.e. on the order of a few percent, conclusions are not changed
dc.identifierhttps://arxiv.org/abs/nucl-th/9805054
dc.identifierhttp://arxiv.org/abs/nucl-th/9805054
dc.identifierPhys.Rev.C58:2459-2477,1998
dc.identifierdoi:10.1103/PhysRevC.58.2459
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191191
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOctet and Decuplet Baryons in a Covariant and Confining Diquark-Quark Model
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