dorsal/arxiv
View SchemaChiral approach to antikaon s- and p-wave interactions in dense nuclear matter
| Authors | L. Tolos, A. Ramos, E. Oset |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0603033 |
| URL | https://arxiv.org/abs/nucl-th/0603033 |
| DOI | 10.1103/PhysRevC.74.015203 |
| Journal | Phys.Rev.C74:015203,2006 |
Abstract
The properties of the antikaons in nuclear matter are investigated from a chiral unitary approach which incorporates the s- and p-waves of the ${\bar K}N$ interaction. To obtain the in-medium meson-baryon amplitudes we include, in a self-consistent way, Pauli blocking effects, meson self-energies corrected by nuclear short-range correlations and baryon binding potentials. We pay special attention to investigating the validity of the on-shell factorization, showing that it cannot be applied in the evaluation of the in-medium corrections to the p-wave amplitudes. In nuclear matter at saturation energy, the $\Lambda$ and $\Sigma$ develop an attractive potential of about -30 MeV, while the $\Sigma^*$ pole remains at the free space value although its width gets sensibly increased to about 80 MeV. The antikaon also develops a moderate attraction that does not support the existence of very deep and narrow bound states, confirming the findings of previous self-consistent calculations.
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"abstract": "The properties of the antikaons in nuclear matter are investigated from a\nchiral unitary approach which incorporates the s- and p-waves of the ${\\bar\nK}N$ interaction. To obtain the in-medium meson-baryon amplitudes we include,\nin a self-consistent way, Pauli blocking effects, meson self-energies corrected\nby nuclear short-range correlations and baryon binding potentials. We pay\nspecial attention to investigating the validity of the on-shell factorization,\nshowing that it cannot be applied in the evaluation of the in-medium\ncorrections to the p-wave amplitudes. In nuclear matter at saturation energy,\nthe $\\Lambda$ and $\\Sigma$ develop an attractive potential of about -30 MeV,\nwhile the $\\Sigma^*$ pole remains at the free space value although its width\ngets sensibly increased to about 80 MeV. The antikaon also develops a moderate\nattraction that does not support the existence of very deep and narrow bound\nstates, confirming the findings of previous self-consistent calculations.",
"arxiv_id": "nucl-th/0603033",
"authors": [
"L. Tolos",
"A. Ramos",
"E. Oset"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.74.015203",
"journal_ref": "Phys.Rev.C74:015203,2006",
"title": "Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter",
"url": "https://arxiv.org/abs/nucl-th/0603033"
},
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