2006/07/31 by K. Sasaki, Kenji Sasaki, E. Oset +1 · 22 citations
Mathematics · Physics and Astronomy · #Combinatorics #Geometry #High-Energy Particle Collisions Research #Lambda #Mathematics #Meson #Omega #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scalar (mathematics) #Statistics #Uncorrelated #nucl-th
paper · pdf · doi:10.1103/physrevc.74.064002
published in Physical Review C 74(6) (American Institute of Physics) · 15 pages, 12 figures
arxiv created 2006/07/31 · openalex publication_date 2006/12/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the central part of the \ensuremathΛN and \ensuremathΛ\ensuremathΛ potential by considering the correlated and uncorrelated two-meson exchange in addition to the \ensuremathω exchange contribution. The correlated two-meson exchange is evaluated within a chiral unitary approach. We find that a short-range repulsion is generated by the correlated two-meson potential, which also produces an attraction in the intermediate-distance region. The uncorrelated two-meson exchange produces a sizable attraction in all cases that is counterbalanced by the \ensuremathω exchange contribution.