2008/06/30 by D. V. Bugg, DAVID V. BUGG · 10 citations
Physics and Astronomy · #Baryon #Cold Atom Physics and Bose-Einstein Condensates #Cusp (singularity) #Eigenvalues and eigenvectors #High-Energy Particle Collisions Research #Meson #Mixing (physics) #Quantum Chromodynamics and Particle Interactions #Resonance (particle physics) #hep-ph
paper · pdf · doi:10.1142/s0217751x09043729
published in International Journal of Modern Physics A 24(02n03), 394-401 (World Scientific) · 8 pages, 4 figures. For Meson08 Proceedings. One important typo corrected
arxiv created 2008/07/05 · openalex publication_date 2009/01/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The mechanism by which a resonance may be attracted to a sharp threshold is described with several examples. It involves a threshold cusp interfering constructively with either or both (i) a resonance produced via confinement, (ii) attractive t- and u-channel exchanges. More generally, it is suggested that resonances are eigenstates generated by mixing between confined states and long-range meson and baryon exchanges.