6533b7d7fe1ef96bd12686e1
RESEARCH PRODUCT
Towards a consistent estimate of the chiral low-energy constants
Roland KaiserGerhard F. EckerVincenzo CiriglianoJorge PortolésMarkus EidemüllerAntonio Pichsubject
Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsChiral perturbation theory010308 nuclear & particles physicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísica01 natural sciencesQCD[PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Low energyCorrelation function[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Quantum electrodynamicsQuantum mechanics0103 physical sciences1/NC expansion010306 general physicsChiral lagrangiansdescription
Guided by the large-N_C limit of QCD, we construct the most general chiral resonance Lagrangian that can generate chiral low-energy constants up to O(p^6). By integrating out the resonance fields, the low-energy constants are parametrized in terms of resonance masses and couplings. Information on those couplings and on the low-energy constants can be extracted by analysing QCD Green functions of currents both for large and small momenta. The chiral resonance theory generates Green functions that interpolate between QCD and chiral perturbation theory. As specific examples we consider the VAP and SPP Green functions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-03-24 |