The values of Σ-→ne upsilon decay parameters and the theory of hyperon semileptonic decays

All solutions of the standard Cabibbo model and the Spectrum Generating Group model are obtained which are allowed by the latest experimental data excluding the value for αsub(e) sup(Σ-→ne upsilon). With the values of the parameters fixed by these experimental data, predictions of the various models for αsub(e) sup(Σ-→ne upsilon) and other yet unmeasured decay parameters are obtained. It is shown that for most of the decay parameters there are only minor differences between the predictions from the various models, except for αsub(e) sup(Σ-→ne upsilon) and αsub(upsilon) sup(Σ-→ne) where the differences are significant. (author)