Abstract
It is shown that the contribution of diagrams with intermediate state vector mesons to the KL →π0γγ amplitude, intensively discussed in literature in recent years, is close to zero provided that theSU(3) group breaking is taken into account. At the same time, the contribution of scalar mesons in the intermediate state is essential. The obtained estimates for Br(KL → π0γγ) conform with the recent experimental data Br(KL→π0γγ)=(2·1 ± 0·6)×10−6.
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