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arXiv · hep-ph/0611375

Vanishing chiral couplings in the large-N_C resonance theory

Jorge Portoles·Ignasi Rosell·Pedro Ruiz-Femenia
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Abstract

The construction of a resonance theory involving hadrons requires implementing the information from higher scales into the couplings of the effective Lagrangian. We consider the large-Nc chiral resonance theory incorporating scalars and pseudoscalars, and we find that, by imposing LO short-distance constraints on form factors of QCD currents constructed within this theory, the chiral low-energy constants satisfy resonance saturation at NLO in the 1/Nc expansion.

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Jorge Portoles, Ignasi Rosell, Pedro Ruiz-Femenia. 2007-08-07. Vanishing chiral couplings in the large-N_C resonance theory. https://doi.org/10.1103/physrevd.75.114011

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