Why the OZI rule is so strongly violated in J/Psi decays?
Abstract
The new f0(1790) meson recently observed by BES collaboration in J/-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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