Scalar Mesons within a model for all non-exotic mesons

Details Scalar Mesons within a model for all non-exotic mesons Scalar Mesons within a model for all non-exotic mesons

2002-01-02

arxiv.org/abs/hep-ph/0201006v1

Proceedings Workshop on Recent Developments in Particle and Nuclear Physics, April 30, 2001, Coimbra (Portugal) ISBN 972-95630

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, plain LaTeX

Scientific paper

We describe a four-parameter model for non-exotic meson-meson scattering, which accommodates all non-exotic mesons, hence also the light scalar mesons, as resonances and bound states characterised by complex singularities of the scattering amplitude as a function of the total invariant mass. The majority of the full $S$-matrix mesonic poles stem from an underlying confinement spectrum. However, the light scalar mesons K0*(830), a0(980), f0(400-1200), and f0(980) do not, but instead originate in 3P0-barrier semi-bound states. In the case of bound states, wave functions can be determined. For ccbar and bbbar, radiative transitions have been calculated. Here we compare the results to the data.

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