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${{\mathit \Sigma}^{+}}$ DECAY PARAMETERS

See the ``Note on Baryon Decay Parameters'' in the neutron Listings. A few early results have been omitted.

$\alpha _{+}$ $/$ $\alpha _{0}$

INSPIRE   JSON  (beta) PDGID:

S019A+0

Older results have been omitted.

VALUE ($ 10^{-2} $) EVTS DOCUMENT ID TECN  COMMENT $\bf{ -4.98 \pm0.27}$ OUR FIT $\bf{ -5.0 \pm0.4}$ OUR AVERAGE $-4.90$ $\pm0.32$ $\pm0.21$ 754k 1 ABLIKIM 2023 BN BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\overline{\mathit \Sigma}}^{-}}$ $-7.3$ $\pm2.1$ 23k MARRAFFINO 1980 HBC ${{\mathit K}^{-}}{{\mathit p}}$ 0.42$-$0.5 ${\mathrm {GeV/}}\mathit c$ 1  ABLIKIM 2023BN uses production through ${{\mathit e}^{+}}$ ${{\mathit e}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\overline{\mathit \Sigma}}^{-}}$ with 10G ${{\mathit J / \psi}}$ events.

References

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