Bochum 2009 – scientific programme
Parts | Days | Selection | Search | Downloads | Help
HK: Fachverband Hadronen und Kerne
HK 49: Nuclear Structure and Dynamics II
HK 49.4: Talk
Wednesday, March 18, 2009, 15:00–15:15, H-ZO 50
Dynamics of Nuclei with Antikaons — •Daniel Gazda1, Jiří Mareš1, Avraham Gal2, and Eli Friedman2 — 1Nuclear Physics Institute, 25068, Řež, Czech Republic — 2Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel
We explore dynamical effects for K nuclear states using the relativistic mean-field approach [1]. Our main objective is to place lower limits on the width resulting from the K absorption in the nuclear medium. K absorption modes are included within an optical-model phenomenology, where the density ρ plays a dynamical role. A lower limit ΓK=50±10 MeV is placed on the widths of K nuclear states for binding in the range BK∼100-200 MeV [2]. Substantial polarization of the core nucleus is found in light kaonic nuclei, with central nuclear densities about twice higher than for the corresponding nuclei without K. Calculations of multi-K nuclei indicate that the K separation energy, as well as the associated nuclear densities, saturate with the number of K mesons embedded in the nuclear medium. It is thus argued that multi-K nuclei do not compete with multihyperonic nuclei in providing the ground state of strange hadronic configurations and that kaon condensation is unlikely to occur in strong-interaction self-bound strange hadronic matter [3].
[1] J. Mareš, E. Friedman, A. Gal, Nucl. Phys. A 770, 84 (2006).
[2] D. Gazda, E. Friedman, A. Gal, J. Mareš, Phys. Rev. C 76, 055204 (2007); erratum - ibid. C 77 019904 (2008).
[3] D. Gazda, E. Friedman, A. Gal, J. Mareš, Phys. Rev. C 77, 045206 (2008).