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Determination of vector meson properties by matching resonance saturation to a constituent quark model

Stefan Leupold
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Abstract

The properties of mesonic resonances can be calculated in terms of the low-energy coefficients of chiral perturbation theory (chiPT) by extending unitarized chiPT 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 chiPT 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.

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Stefan Leupold. 2003-03-04. Determination of vector meson properties by matching resonance saturation to a constituent quark model. https://arxiv.org/abs/hep-ph/0111204

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