Meson resonances, large Nc and chiral symmetry
V. Cirigliano, G. Ecker, H. Neufeld, A. Pich
Abstract
We investigate the implications of large Nc and chiral symmetry for the mass spectra of meson resonances. Unlike for most other mesons, the mass matrix of the light scalars deviates strongly from its large-Nc limit. We discuss the possible assignments for the lightest scalar nonet that survives in the large-Nc limit.
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