Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter
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 co...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/12209 |
| Acceso en línea: | https://hdl.handle.net/2445/12209 |
| Access Level: | acceso abierto |
| Palabra clave: | Propietats de la matèria Constitució de la matèria Col·lisions (Física nuclear) Antikaons Properties of matter Constitution of matter Collisions (Nuclear physics) |
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Chiral approach to antikaon s- and p-wave interactions in dense nuclear matterTolós Rigueiro, LauraRamos Gómez, ÀngelsOset Baguena, EulogioPropietats de la matèriaConstitució de la matèriaConstitució de la matèriaCol·lisions (Física nuclear)AntikaonsProperties of matterConstitution of matterCollisions (Nuclear physics)AntikaonsThe 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.The American Physical Society2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/12209Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.74.015203Physical Review C, 2006, vol. 74, núm. 1, p. 015203-1-015203-14http://dx.doi.org/10.1103/PhysRevC.74.015203(c) The American Physical Society, 2000info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/122092026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| title |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| spellingShingle |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter Tolós Rigueiro, Laura Propietats de la matèria Constitució de la matèria Constitució de la matèria Col·lisions (Física nuclear) Antikaons Properties of matter Constitution of matter Collisions (Nuclear physics) Antikaons |
| title_short |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| title_full |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| title_fullStr |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| title_full_unstemmed |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| title_sort |
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter |
| dc.creator.none.fl_str_mv |
Tolós Rigueiro, Laura Ramos Gómez, Àngels Oset Baguena, Eulogio |
| author |
Tolós Rigueiro, Laura |
| author_facet |
Tolós Rigueiro, Laura Ramos Gómez, Àngels Oset Baguena, Eulogio |
| author_role |
author |
| author2 |
Ramos Gómez, Àngels Oset Baguena, Eulogio |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Propietats de la matèria Constitució de la matèria Constitució de la matèria Col·lisions (Física nuclear) Antikaons Properties of matter Constitution of matter Collisions (Nuclear physics) Antikaons |
| topic |
Propietats de la matèria Constitució de la matèria Constitució de la matèria Col·lisions (Física nuclear) Antikaons Properties of matter Constitution of matter Collisions (Nuclear physics) Antikaons |
| description |
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. |
| publishDate |
2006 |
| dc.date.none.fl_str_mv |
2006 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/12209 |
| url |
https://hdl.handle.net/2445/12209 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.74.015203 Physical Review C, 2006, vol. 74, núm. 1, p. 015203-1-015203-14 http://dx.doi.org/10.1103/PhysRevC.74.015203 |
| dc.rights.none.fl_str_mv |
(c) The American Physical Society, 2000 info:eu-repo/semantics/openAccess |
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(c) The American Physical Society, 2000 |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
The American Physical Society |
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The American Physical Society |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Física Quàntica i Astrofísica) reponame:Dipòsit Digital de la UB instname:Universidad de Barcelona |
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Universidad de Barcelona |
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Dipòsit Digital de la UB |
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Dipòsit Digital de la UB |
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1869419607794647040 |
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15,300719 |