From the Kappa via the Ds0*(2317) to the chi_c0: connecting light and heavy scalar mesons

Details From the Kappa via the Ds0*(2317) to the chi_c0: connecting light and heavy scalar mesons From the Kappa via the Ds0*(2317) to the chi_c0: connecting light and heavy scalar mesons

2005-09-29

arxiv.org/abs/hep-ph/0509351v1

Phys.Rev.D74:037501,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 figures, additional figures at "http://cft.fis.uc.pt/eef/animations/start.html"

Scientific paper

10.1103/PhysRevD.74.037501

Pole trajectories connecting light and heavy scalar mesons, both broad resonances and quasi-bound 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 chi_c0, via the disputed D_s(2317). Moreover, a chi'_c0(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 q-qbar states with important two-meson components.

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