Abstract
We investigate the low-energy K̄N 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 K̄N, Π∑, 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 ρ0. This may explain the striking behaviour of the K- -nuclear optical potential found in the analysis of kaonic atom data.
Original language | English |
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Pages (from-to) | 12-16 |
Number of pages | 5 |
Journal | Physics Letters B |
Volume | 365 |
Issue number | 1-4 |
DOIs | |
State | Published - 4 Jan 1996 |
Keywords
- Density dependence of K-nuclear optical potential
- Kaonic atoms
- Low energy K̄N interaction
- Pauli blocking effect on the Λ(1405) resonance
- SU(3) Chiral Lagrangian