Vanishing chiral couplings in the large-N_C resonance theory
High Energy Physics - Phenomenology
2008-11-26 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/0611375,
title = {Vanishing chiral couplings in the large-N_C resonance theory},
author = {Jorge Portoles and Ignasi Rosell and Pedro Ruiz-Femenia},
journal= {arXiv preprint arXiv:hep-ph/0611375},
year = {2008}
}
Comments
5 pages, 2 figures. Version published in Physical Review D. Some equations to facilitate the discussion have been added