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${{\mathit \Xi}^{0}}$ DECAY PARAMETERS

See the ``Note on Baryon Decay Parameters'' in the neutron Listings.

$\alpha $ FOR ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}^{0}}$

INSPIRE   PDGID:

S023A

The PDG 2022 average $\alpha\mathrm {({{\mathit \Xi}^{0}})}\alpha _{−}({{\mathit \Lambda}}$) = $-0.261$ $\pm0.006$ divided by the PDG 2022 average $\alpha _{−}({{\mathit \Lambda}}$) = $0.748$ $\pm0.007$ gives $\alpha\mathrm {({{\mathit \Xi}^{0}})}$ = $-0.349$ $\pm0.009$.

VALUE EVTS DOCUMENT ID TECN  COMMENT $\bf{ -0.349 \pm0.009}$ OUR EVALUATION $-0.3750$ $\pm0.0034$ $\pm0.0016$ 327k ABLIKIM 2023 AU BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Xi}^{0}}{{\overline{\mathit \Xi}}^{0}}$ • • We do not use the following data for averages, fits, limits, etc. • • $-0.358$ $\pm0.042$ $\pm0.013$ 1.9k ABLIKIM 2023 AD BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \Xi}^{0}}{{\overline{\mathit \Xi}}^{0}}$

References

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