SU(3) symmetry breaking in hyperon semileptonic decays
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Flavor SU(3) symmetry breaking in hyperon semileptonic decay form factors is analyzed using the 1/Nc expansion. A detailed comparison with experimental data shows that corrections to f1, are approximately 10%25, which agrees with theoretical expectations. Corrections to g1, are compatible with first-order symmetry breaking. A fit to the experimental data allows one to predict the g1 form factor for Ξ° → Σ decay. The proton matrix element of the T8 component of the axial vector current [which is equal to 3F-D in the SU(3) symmetry limit] is found to be ≈=0.34-0.46.
Flavor SU(3) symmetry breaking in hyperon semileptonic decay form factors is analyzed using the 1/Nc expansion. A detailed comparison with experimental data shows that corrections to f1, are approximately 10%25, which agrees with theoretical expectations. Corrections to g1, are compatible with first-order symmetry breaking. A fit to the experimental data allows one to predict the g1 form factor for Ξ° → Σ%2b decay. The proton matrix element of the T8 component of the axial vector current [which is equal to 3F-D in the SU(3) symmetry limit] is found to be ≈=0.34-0.46.
