First absolute branching fractions for Σ⁺ → p π⁰ and Σ⁺ → n π⁺ measured at 49.79% and 49.87%, deviating from PDG values and showing >5σ evidence for ΔI=3/2 amplitudes.
Ablikimet al.(BESIII Collaboration), Phys
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The absolute branching fractions B(Xi(1530)^- to Xi^0 pi^-) = 61.4% and B(Xi(1530)^- to Xi^- pi^0) = 29.7% are measured for the first time, with their sum 91.1%, and B(psi(3686) to anti-Xi+ Xi(1530)^- + c.c.) is updated to 8.67 x 10^{-6}.
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First measurement of the absolute branching fractions of $\Sigma^+$ nonleptonic decays and test of the $\Delta I = 1/2$ rule
First absolute branching fractions for Σ⁺ → p π⁰ and Σ⁺ → n π⁺ measured at 49.79% and 49.87%, deviating from PDG values and showing >5σ evidence for ΔI=3/2 amplitudes.
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Measurement of the Absolute Branching Fraction of Xi(1530)^{-} to (Xi pi)^{-} and Updated Measurement of the Branching Fraction of psi(3686) to anti-Xi^{+} Xi(1530)^{-} + c.c
The absolute branching fractions B(Xi(1530)^- to Xi^0 pi^-) = 61.4% and B(Xi(1530)^- to Xi^- pi^0) = 29.7% are measured for the first time, with their sum 91.1%, and B(psi(3686) to anti-Xi+ Xi(1530)^- + c.c.) is updated to 8.67 x 10^{-6}.