2004/11/02 by Z. Rudy, W. Cassing, L. Jarczyk +4 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1140/epja/i2004-10108-7
published as Eur.Phys.J.A23:379-385,2005; Erratum-ibid.A24:159,2005 · 7 pages, 5 figures, submitted to Eur. Phys. J. A
arxiv created 2004/11/02 · openalex publication_date 2005/01/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The production of K+ mesons in proton-nucleus collisions from 1.0 to 2.3 GeV is analyzed with respect to one-step nucleon-nucleon (NN→ N Y K+) and two-step Δ-nucleon (ΔN → K+ Y N) or pion-nucleon (πN → K+ Y ) production channels on the basis of a coupled-channel transport approach (CBUU) including the kaon final-state-interactions (FSI). Momentum-dependent potentials for the nucleon, hyperon and kaon in the final state are included as well as K+ elastic rescattering in the target nucleus. The transport calculations are compared to the experimental K+ spectra taken at COSY-Jülich. Our systematic analysis of K+ spectra from 12C, 63Cu, 107Ag and 197Au targets as well as their momentum differential ratios gives a repulsive K+ potential of 20± 5 MeV at normal nuclear matter density.