dorsal/arxiv
View SchemaThe in-medium $\bar K N$ interaction within a chiral unitary approach
| Authors | Laura Tolos, Angels Ramos, Eulogio Oset |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0702089 |
| URL | https://arxiv.org/abs/nucl-th/0702089 |
| DOI | 10.1143/PTPS.168.635 |
| Journal | Prog.Theor.Phys.Suppl.168:635-638,2007 |
Abstract
The s- and p-wave contributions to the $\bar K N$ interaction in dense nuclear matter are obtained using a chiral unitary approach. We perform a self-consistent calculation of the $\bar K$ self-energy including Pauli blocking effects, meson self-energies modified by short-range correlations and baryon binding potentials. We find that the on-shell factorization cannot be applied to evaluate the in-medium corrections to p-wave amplitudes. Furthermore, the $\Lambda$ and $\Sigma$ develop a mass shift of -30 MeV at saturation density while the $\Sigma^*$ width increases to 80 MeV. We conclude that no deep and narrow $\bar K$ bound states could be observed.
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"abstract": "The s- and p-wave contributions to the $\\bar K N$ interaction in dense\nnuclear matter are obtained using a chiral unitary approach. We perform a\nself-consistent calculation of the $\\bar K$ self-energy including Pauli\nblocking effects, meson self-energies modified by short-range correlations and\nbaryon binding potentials. We find that the on-shell factorization cannot be\napplied to evaluate the in-medium corrections to p-wave amplitudes.\nFurthermore, the $\\Lambda$ and $\\Sigma$ develop a mass shift of -30 MeV at\nsaturation density while the $\\Sigma^*$ width increases to 80 MeV. We conclude\nthat no deep and narrow $\\bar K$ bound states could be observed.",
"arxiv_id": "nucl-th/0702089",
"authors": [
"Laura Tolos",
"Angels Ramos",
"Eulogio Oset"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1143/PTPS.168.635",
"journal_ref": "Prog.Theor.Phys.Suppl.168:635-638,2007",
"title": "The in-medium $\\bar K N$ interaction within a chiral unitary approach",
"url": "https://arxiv.org/abs/nucl-th/0702089"
},
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