2021/09/07 by Peter C. Bruns, P. C. Bruns, Bruns, P. C. +2
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.2109.03109
30 pages, 13 figures
arxiv created 2021/09/07 · openalex publication_date 2021/09/07 · arxiv updated 2021/09/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the impact of SU(3) flavor symmetry breaking on the properties of dynamically generated Λ^* states within an effective separable potential model describing the coupled channels KN system. The model is based on the chiral meson-baryon Lagrangian at next-to-leading order, and constitutes an improvement over a previous model developed by our group, with its applicability being extended to higher energies covering the Λ(1670) resonance region. It is demonstrated that the ratios of channel couplings to the resonant states can vary dramatically when the flavor breaking is gradually switched off, tracing a path to the restored SU(3) symmetry. We conclude that the couplings determined from physical observables cannot be used to reliably relate a given resonance to a specific flavor multiplet.