arXiv:0806.3566·v2·High Energy Physics — Phenomenology
Synchonisation of Resonances with Thresholds
D.V. Bugg (Queen Mary, University of London, UK)🇬🇧
Abstract
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.
Comments: 8 pages, 4 figures. For Meson08 Proceedings. One important typo corrected