dorsal/arxiv
View SchemaGround-state Spectrum of Light-quark Mesons
| Authors | C. J. Burden, Lu Qian, C. D. Roberts, P. C. Tandy, M. J. Thomson |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9605027 |
| URL | https://arxiv.org/abs/nucl-th/9605027 |
| DOI | 10.1103/PhysRevC.55.2649 |
| Journal | Phys.Rev.C55:2649-2664,1997 |
Abstract
A 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 Ans\"atze and the ladder kernel are highlighted.
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"abstract": "A confining, Goldstone theorem preserving, separable Ansatz for the ladder\nkernel of the two-body Bethe-Salpeter equation is constructed from\nphenomenologically efficacious $u$, $d$ and $s$ dressed-quark propagators. The\nsimplicity of the approach is its merit. It provides a good description of the\nground-state isovector-pseudoscalar, vector and axial-vector meson spectrum;\nfacilitates an exploration of the relative importance of various components of\nthe two-body Bethe-Salpeter amplitudes, showing that sub-leading Dirac\ncomponents are quantitatively important in the isovector-pseudoscalar meson\nchannels; and allows a scrutiny of the domain of applicability of ladder\ntruncation studies. A colour-antitriplet diquark spectrum is obtained.\nShortcomings of separable Ans\\\"atze and the ladder kernel are highlighted.",
"arxiv_id": "nucl-th/9605027",
"authors": [
"C. J. Burden",
"Lu Qian",
"C. D. Roberts",
"P. C. Tandy",
"M. J. Thomson"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.55.2649",
"journal_ref": "Phys.Rev.C55:2649-2664,1997",
"title": "Ground-state Spectrum of Light-quark Mesons",
"url": "https://arxiv.org/abs/nucl-th/9605027"
},
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