2005/09/29 by Eef van Beveren, Joao E. G. N. Costa, João E. G. N. Costa +2
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.74.037501
published as Phys.Rev.D74:037501,2006 · 11 pages, 3 figures, additional figures at "http://cft.fis.uc.pt/eef/animations/start.html"
arxiv created 2005/09/29 · openalex publication_date 2006/08/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Pole trajectories connecting light and heavy scalar mesons, both broad resonances and quasibound states, are computed employing a simple coupled-channel model. Instead of varying the coupling constant as in previous work, quark and meson masses are continuously changed, so as to have one scalar meson evolve smoothly into another with different flavor(s). In particular, it is shown, among several other cases, how the still controversial K0*(800) turns into the established \ensuremathχc0, via the disputed Ds(2317). Moreover, a \ensuremathχc0^\ensuremath'(3946) is predicted, which may correspond to the recently observed Y(3943) resonance. These results lend further support to our unified dynamical picture of all scalar mesons, as unitarized qq states with important two-meson components.