Odd-intrinsic-parity processes within the resonance effective theory of QCD

2003/06/17 by Pedro Ruiz-Femenía, P. D. Ruiz-Femenia, A. Pich +3 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1088/1126-6708/2003/07/003

published as JHEP 0307 (2003) 003 · 20 pages, 4 figures

arxiv created 2003/06/17 · openalex publication_date 2003/07/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

We analyse the most general odd-intrinsic-parity effective Lagrangian of QCD valid for processes involving one pseudoscalar with vector mesons described in terms of antisymmetric tensor fields. Substantial information on the odd-intrinsic-parity couplings is obtained by constructing the vector-vector-pseudoscalar Green's three-point function, at leading order in 1/Nc, and demanding that its short-distance behaviour matches the corresponding OPE result. The QCD constraints thus enforced allow us to predict the decay amplitude omega -> pion gamma, and the O(p⁶) corrections to pion -> gamma gamma. Noteworthy consequences concerning the vector meson dominance assumption in the decay omega -> 3 pions are also extracted from the previous analysis.

Citations

• Chiral perturbation theory to one loop
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• Axial-Vector Vertex in Spinor Electrodynamics
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Cited by

• Renormalization of the antisymmetric tensor field propagator and dynamical generation of the 1+ − mesons in Resonance Chiral Theory
• Hadronic three-body decays of light vector mesons
• e+e− annihilation to π0π0γ and π0ηγ as a source of information on scalar and vector mesons