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

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

$\mathit g_{1}(0)/\mathit f_{1}$(0) FOR ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{e}}}$

INSPIRE   PDGID:

S023AH

VALUE EVTS DOCUMENT ID TECN  COMMENT $\bf{ 1.22 \pm0.05}$ OUR AVERAGE $1.21$ $\pm0.05$ BATLEY 2013 NA48 ${{\mathit p}}{}^{}\mathrm {Be}$, 400 GeV $1.32$ ${}^{+0.21}_{-0.17}$ $\pm0.05$ 487 1 ALAVI-HARATI 2001 I KTEV ${{\mathit p}}$ nucleus, 800 GeV • • We do not use the following data for averages, fits, limits, etc. • • $1.20$ $\pm0.04$ $\pm0.03$ 6520 2 BATLEY 2007 NA48 See BATLEY 2013 1  ALAVI-HARATI 2001I assumes here that the second-class current is zero and that the weak-magnetism term takes its exact SU(3) value. 2  This BATLEY 2007 result uses our 2006 value of ${\it V}_{\it us}$ from semileptonic kaon decays as input.

References:

BATLEY 2013 PL B720 105 Measurement of the Branching Ratio of the Decay ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$ BATLEY 2007 PL B645 36 Measurement of the Branching Ratios of the Decays ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{e}}}$ and ${{\overline{\mathit \Xi}}^{0}}$ $\rightarrow$ ${{\overline{\mathit \Sigma}}^{+}}{{\mathit e}^{+}}{{\mathit \nu}_{{e}}}$ ALAVI-HARATI 2001I PRL 87 132001 First Measurement of Form Factors of the Decay ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{e}}}$

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