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 language | English |
---|---|
Pages (from-to) | 150-158 |
Number of pages | 9 |
Journal | Nuclear Physics A |
Volume | 881 |
DOIs | |
State | Published - 1 May 2012 |
Keywords
- Coupled channel chiral models
- In-medium subthreshold scattering amplitudes
- Kaonic atoms