Low energy overlineKN interaction in nuclear matter
Abstract
We investigate the low-energy overlineKN interaction in nuclear matter including Pauli blocking, Fermi motion and binding effects. We use a coupled-channel approach based on the Chiral SU(3) Effective Lagrangian which describes all available low energy data of the coupled overlineKN, πΣ, πΛ system. Due to the dynamics of the Λ (1405) resonance we find a strong non-linear density dependence of the K -p scattering amplitude in nuclear matter. The real part of the K -p scattering length changes sign already at a small fraction of nuclear matter density, less than 0.2 po. This may explain the striking behaviour of the K - -nuclear optical potential found in the analysis of kaonic atom data.
- Publication:
-
Physics Letters B
- Pub Date:
- February 1996
- DOI:
- 10.1016/0370-2693(95)01289-3
- Bibcode:
- 1996PhLB..365...12W
- Keywords:
-
- PACS;
- 14.20 JN;
- 14.40 AQ;
- 25.80 NV;
- LOW ENERGY KN INTERACTION;
- SU(3) CHIRAL LAGRANGIAN;
- PAULI BLOCKING EFFECT ON THE λ (1405) RESONANCE;
- DENSITY DEPENDENCE OF K-NUCLEAR OPTICAL POTENTIAL;
- KAONIC ATOMS