Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/12209
Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter
Títol de la revista
Director/Tutor
Contribució addicional
ISSN de la revista
Títol del volum
Resum
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.
Recurs relacionat
Matèries (anglès)
Citació
Citació
TOLÓS RIGUEIRO, Laura, RAMOS GÓMEZ, Àngels and OSET BAGUENA, Eulogio. Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter. Physical Review C. 2006. Vol. 74, num. 1, pags. 015203-1-015203-14. ISSN 0556-2813. [consulted: 6 of October of 2026]. Available at: https://hdl.handle.net/2445/12209