Large Nc Behavior of Light Scalar Meson Nonet Revisited
arXiv:hep-ph/0401037
Abstract
We study whether light scalar meson nonet can survive in large values of Nc through observing how scattering amplitudes behave as Nc increases from 3 within a unitarized chiral approach. We obtain the result that vector mesons such as rho and K* survive as narrow width resonances, but all of the scalar meson nonet below 1 GeV fade out as Nc exceeds a rather small number about 6.
8 pages and 6 eps figures