Abstract
Hyperon nonleptonic decays have been analyzed using a chiral-bag model instead of the MIT-bag model which was used in earlier analyses. The adopted theoretical formalism allows a step by step comparison between the new and the old approaches. The results are in agreement with the calculation which has used chiral model in its cloudybag variant. Chiral-bag model based theoretical predictions are not significantly different from the old MIT-bag model based results. Theory can account for overall gross features of the hyperon nonleptonic decays but not for the fine detailes like the exact, almost vanishing, value of the A(Σ++) amplitude.
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