Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/12209
 Title: Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter Author: Tolós Rigueiro, LauraRamos Gómez, ÀngelsOset Baguena, Eulogio Keywords: Propietats de la matèriaConstitució de la matèriaConstitució de la matèriaCol·lisions (Física nuclear)AntikaonsProperties of matterConstitution of matterCollisions (Nuclear physics)Antikaons Issue Date: 2006 Publisher: The American Physical Society 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. Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.74.015203 It is part of: Physical Review C, 2006, vol. 74, núm. 1, p. 015203-1-015203-14 Related resource: http://dx.doi.org/10.1103/PhysRevC.74.015203 URI: http://hdl.handle.net/2445/12209 ISSN: 0556-2813 Appears in Collections: Articles publicats en revistes (Física Quàntica i Astrofísica)

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