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- Abstract
- It is shown that the non-conservation of the flavor singlet axial current due to the so-called `strong anomaly' leads to a quantitative explanation of the branching ratios Gamma ( psi ' rarr psi pi /sup 0 /)/ Gamma ( psi ' rarr psi eta ) and Gamma ( psi rarr eta ' gamma )/ Gamma ( psi rarr eta gamma ).
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Gérard, J.-M., Pestieau, J., & Weyers, J. (1980). Isospin and flavor symmetry breaking in psi and psi’ decays. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 94B(2), 227-230. https://doi.org/10.1016/0370-2693(80)90864-3 (Original work published 1980)