Abstract
In 1979, it was shown by one of us (M.K.V.) that the contribution to the amplitude of this decay from diagrams with one baryon loop is equal to zero and contributions from diagrams with meson loops appear to be very small. However, pole diagrams with intermediate vector mesons were not considered there. Here, it is shown that the contributions of these pole diagrams dominate. The meson-baryon chiral model used here is compared with known quark chiral models. The obtained results are in satisfactory agreement with recent experimental data.
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