Abstract
Working in the large-N approximation (N being the number of colors), we relate thestrong η′→ηππ processes to theweak K L→πππ decays. Chiral corrections are crucial to reproduce the experimental data. The isospin-violating η(η′)→πππ and the weakη→K +π- decays are also treated in this framework. We comment on the predictions of a “QCD-inspired” approach which determines in principle the chiral symmetry-breaking scales considered, and consequently the Skyrme coupling.
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Fajfer, S., Gérard, J.M. Hadronic decays of η and η′ in the large-N limit. Z. Phys. C - Particles and Fields 42, 431–436 (1989). https://doi.org/10.1007/BF01548448
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DOI: https://doi.org/10.1007/BF01548448