Anomalous violation of the OZI-rule in the $N\bar N\to ΦΦ$, $N\bar N\to Φγ$ reactions and instantons

Abstract

It is shown, that specific properties of the instanton induced interaction between quarks leads to the anomalous violation of the OZI-rule in the $N\bar N\to ΦΦ$, $N\bar N\to Φγ$ reactions. In the framework of instanton model of the QCD vacuum, the energy dependence of the cross sections of these reactions is calculated.