Ground-state Spectrum of Light-quark Mesons

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dc.creatorBurden, C. J.
dc.creatorQian, Lu
dc.creatorRoberts, C. D.
dc.creatorTandy, P. C.
dc.creatorThomson, M. J.
dc.date1996-05-17
dc.date.accessioned2026-07-07T11:15:46Z
dc.date.available2026-07-07T11:15:46Z
dc.descriptionA confining, Goldstone theorem preserving, separable Ansatz for the ladder kernel of the two-body Bethe-Salpeter equation is constructed from phenomenologically efficacious $u$, $d$ and $s$ dressed-quark propagators. The simplicity of the approach is its merit. It provides a good description of the ground-state isovector-pseudoscalar, vector and axial-vector meson spectrum; facilitates an exploration of the relative importance of various components of the two-body Bethe-Salpeter amplitudes, showing that sub-leading Dirac components are quantitatively important in the isovector-pseudoscalar meson channels; and allows a scrutiny of the domain of applicability of ladder truncation studies. A colour-antitriplet diquark spectrum is obtained. Shortcomings of separable Ansätze and the ladder kernel are highlighted.
dc.description30 pages, LaTeX/REVTEX 3.0, no figures
dc.identifierhttps://arxiv.org/abs/nucl-th/9605027
dc.identifierhttp://arxiv.org/abs/nucl-th/9605027
dc.identifierPhys.Rev.C55:2649-2664,1997
dc.identifierdoi:10.1103/PhysRevC.55.2649
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192492
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGround-state Spectrum of Light-quark Mesons
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