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Why the OZI rule is so strongly violated in J/Psi decays?

L. Ya. Glozman
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Abstract

The new $f_0(1790)$ meson recently observed by BES collaboration in $J/Ψ$-decay, is seen only in the OZI-forbidden channel. It is shown that chiral symmetry restoration in excited hadrons implies a new selection rule of dynamical origin that forbids some of the OZI-favoured mechanisms of decays. Hence decays into channels that are suppressed by OZI can become dominant.

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L. Ya. Glozman. 2006-01-06. Why the OZI rule is so strongly violated in J/Psi decays?. https://doi.org/10.1103/physrevd.73.017503

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