dorsal/arxiv
View SchemaSoft two-meson-exchange nucleon-nucleon potentials. II. One-pair and two-pair diagrams
| Authors | Th. A. Rijken, V. G. J. Stoks |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9509031 |
| URL | https://arxiv.org/abs/nucl-th/9509031 |
| DOI | 10.1103/PhysRevC.54.2869 |
| Journal | Phys.Rev.C54:2869-2882,1996 |
Abstract
Two-meson-exchange nucleon-nucleon potentials are derived where either one or both nucleons contains a pair vertex. Physically, the meson-pair vertices are meant to describe in an effective way (part of) the effects of heavy-meson exchange and meson-nucleon resonances. {}From the point of view of ``duality,'' these two kinds of contribution are roughly equivalent. The various possibilities for meson pairs coupling to the nucleon are inspired by the chiral-invariant phenomenological Lagrangians that have appeared in the literature. The coupling constants are fixed using the linear $\sigma$ model. We show that the inclusion of these two-meson exchanges gives a significant improvement over a potential model including only the standard one-boson exchanges.
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"abstract": "Two-meson-exchange nucleon-nucleon potentials are derived where either one or\nboth nucleons contains a pair vertex. Physically, the meson-pair vertices are\nmeant to describe in an effective way (part of) the effects of heavy-meson\nexchange and meson-nucleon resonances. {}From the point of view of ``duality,\u0027\u0027\nthese two kinds of contribution are roughly equivalent. The various\npossibilities for meson pairs coupling to the nucleon are inspired by the\nchiral-invariant phenomenological Lagrangians that have appeared in the\nliterature. The coupling constants are fixed using the linear $\\sigma$ model.\nWe show that the inclusion of these two-meson exchanges gives a significant\nimprovement over a potential model including only the standard one-boson\nexchanges.",
"arxiv_id": "nucl-th/9509031",
"authors": [
"Th. A. Rijken",
"V. G. J. Stoks"
],
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"nucl-th"
],
"doi": "10.1103/PhysRevC.54.2869",
"journal_ref": "Phys.Rev.C54:2869-2882,1996",
"title": "Soft two-meson-exchange nucleon-nucleon potentials. II. One-pair and two-pair diagrams",
"url": "https://arxiv.org/abs/nucl-th/9509031"
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