Several different sources of SU 3 symmetry breaking, including ρ-X0 mixing and the first Weinberg sum rule, are studied in the context of pole models for such decays as π0→γγ, η→γγ, X0→γγ, η→ππγ and X0→ργ. Present data prefer some of the models over others.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Astronomy and Astrophysics