CONTRIBUTIONS OF THE C-ODD AXIAL-VECTOR RESONANCES TO ETA-]PI-0-GAMMA-GAMMA AND GAMMA-GAMMA-]PI-0-PI-0
We consider the contributions of the C-odd axial-vector resonances (b1,h1) to eta-->pi0gammagamma, as well as those of the usual C-odd vector resonances (rho,omega) and chiral loops. Inclusion of b1(1235), h1(1170), h1(1380) increases the decay width of eta-->pi0gammagamma, improving the theoretical prediction. The measurement of the gammagamma spectrum can test our model. We also discuss the effects of these C-odd axial-vector resonances on electromagnetic interactions of neutral pions: gammagamma-->pi0pi0 and electric and magnetic polarizabilities of pi0.
- Publisher
- AMERICAN PHYSICAL SOC
- Issue Date
- 1993-05
- Language
- English
- Article Type
- Article
- Keywords
COLLISIONS
- Citation
PHYSICAL REVIEW D, v.47, no.9, pp.3933 - 3937
- ISSN
- 0556-2821
- Appears in Collection
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