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AbstractAbstract
[en] The amplitude for the decay X0 → 2πγ is constructed using a finite dispersion relation. The decay width and distribution are found to be consistent with recent experiment. A finite-energy sum rule analysis indicates that the coupling of the X0 to the photon and the rho meson, g/sub rho//subX0//sub gamma/, has its quark-model value. A similar study is made of eta → 2πγ from which it is concluded that g/sub rho//sub eta//sub gamma/ probably also has its quark-model value
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Journal Article
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Physical Review. D, Particles Fields; v. 11(9); p. 2653-2661
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