arXiv:hep-ph/0611375·v2·High Energy Physics — Phenomenology
Vanishing chiral couplings in the large-N_C resonance theory
Jorge Portoles (1)🇪🇸 · Ignasi Rosell (1)🇪🇸 · Pedro Ruiz-Femenia (2) ((1) IFIC, Valencia, (2) Max-Planck-Institut fur Physik, Munchen)🇩🇪
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.
Comments: 5 pages, 2 figures. Version published in Physical Review D. Some equations to facilitate the discussion have been added