Kaonic atoms and in-medium K -N amplitudes

E. Friedman*, A. Gal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Recent work on the connection between in-medium subthreshold K -N amplitudes and kaonic atom potentials is updated by using a next to leading order chirally motivated coupled channel separable interaction model that reproduces K -N observables at low energies, including the very recent SIDDHARTA results for the atomic K --hydrogen 1s level shift and width. The corresponding K --nucleus potential is evaluated self-consistently within a single-nucleon approach and is critically reviewed with respect to empirical features of phenomenological optical potentials. The need to supplement the single-nucleon based approach with multi-nucleon interactions is demonstrated by showing that additional empirical absorptive and dispersive terms, beyond the reach of chirally motivated K --nucleus potentials, are required in order to achieve good agreement with the bulk of the data on kaonic atoms.

Original languageEnglish
Pages (from-to)150-158
Number of pages9
JournalNuclear Physics A
Volume881
DOIs
StatePublished - 1 May 2012

Keywords

  • Coupled channel chiral models
  • In-medium subthreshold scattering amplitudes
  • Kaonic atoms

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