Determination of vector meson properties by matching resonance saturation to a constituent quark model
Institut für Theoretische Physik, Universität Giessen, Giessen, Germany
The properties of mesonic resonances can be calculated in terms of the low-energy coefficients of chiral perturbation theory (PT) by extending unitarized PT to higher energies. On the other hand, these low-energy coefficients can be calculated in two different models, namely i) by assuming resonance saturation and ii) within a constituent quark model. By matching the expressions of the two models combined with the results of unitarized PT and the Weinberg sum rules, the properties of vector and axial-vector mesons can be calculated in the combined large-N c and chiral limit.
© Società Italiana di Fisica and Springer-Verlag, 2003