1994/06/25 by Volker Koch · 13 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Pulsars and Gravitational Waves Research #hep-ph #nucl-th
paper · pdf · doi:10.1016/0370-2693(94)91434-6
published as Phys.Lett. B337 (1994) 7-13 · 12 pages 5 figures, SUNY-NTG-94-27
arxiv created 1994/06/25 · openalex publication_date 1994/10/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The scattering of antikaons with nucleons is studied in the nuclear environment. Describing the \lam as a K- proton bound state, we find, that due to the Pauli blocking of intermediate states, the mass of the Λ(1405) is shifted upwards in energy, above the K- proton threshold and and its width is somewhat broadened. As a consequence the s-wave K---nucleon scattering length turns attractive at finite nucleon density (ρ≥ 0.25 ρ0) leading to a mean field potential for the K- of about ∼ -100 \rm MeV in nuclear matter at ground state density. Consequences for Heavy Ion collisions and possible experimental checks for the structure of the \lam are discussed. (Figures will be sent on request)