We investigate the implications of large N-c 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-N-c limit. We discuss the possible assignments for the lightest scalar nonet that survives in the large-N-c limit.
Cirigliano, Vincenzo Ecker, Gerhard Neufeld, Helmut Pich Zardoya, Antonio 2003 Meson resonances, large N_c and chiral symmetry Journal of High Energy Physics 2003 6 012-1 012-14
