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"Light pseudoscalar mesons in a nonlocal three flavor chiral quark model"
D. Gómez Dumm, A. Scarpettini and N.N. Scoccola
Proc. of the "IX Hadron Physics and VII Relativistic Aspects of Nuclear Physics: A Joint Meeting on QCD and QCP", Angra Dos Reis, Río de Janeiro, Brazil, March 28-April 3, 2004. Ed. M. Bracco, M. Chiapparini, E. Ferreira and T. Kodama
AIP Conf. Proc., Vol.739 (2004) 440-442
We study the properties of light pseudoscalar mesons in a three flavor chiral quark model with nonlocal separable interactions. We consider the case of a Gaussian regulator, evaluating meson masses and decay constants. Our results are found to be in good agreement with empirical values, in particular, in the case of the ratio fK/fπ and the decay π0  γ γ. The model leads also to a reasonable description of the observed phenomenology in the ηη′ sector, where two significantly different mixing angles are required.
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