Vanishing chiral couplings in the large-NC resonance theory
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.
- Publication:
-
Physical Review D
- Pub Date:
- June 2007
- DOI:
- 10.1103/PhysRevD.75.114011
- arXiv:
- arXiv:hep-ph/0611375
- Bibcode:
- 2007PhRvD..75k4011P
- Keywords:
-
- 12.39.Fe;
- 11.15.Pg;
- 12.38.-t;
- Chiral Lagrangians;
- Expansions for large numbers of components;
- Quantum chromodynamics;
- High Energy Physics - Phenomenology
- E-Print:
- 4 pages, 2 figures