Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-10-11
AIPConf.Proc.619:209-218,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, plain LaTeX
Scientific paper
10.1063/1.1482450
Non-exotic scalar-meson resonances in S-wave meson-meson scattering are studied in the light of a unitarised Schroedinger model. The resulting poles in the scattering matrices, by analytical continuation into the complex-energy plane, are grouped into nonets of isoscalar, isodoublet, and isotriplet resonances. All singularities can be related to quark-antiquark confinement states, the light-quark nonet of which has ground states at 1.3 to 1.4 GeV and level spacings of some 300-400 MeV, except for a nonet of light scalar mesons below 1 GeV. All non-exotic S-wave resonances reported by experiment fit into this scheme.
Beveren Eef van
Rupp George
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