pdgLive Home   >   ${{\mathit \Xi}}$ BARYONS ($\mathit S$ = $-2$, $\mathit I$ = 1/2)   >   ${{\mathit \Xi}^{-}}$   >   ${\mathit g}_{{{\mathit A}}}$ $/$ ${\mathit g}_{{{\mathit V}}}$ FOR ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}$

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

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

${\mathit g}_{{{\mathit A}}}$ $/$ ${\mathit g}_{{{\mathit V}}}$ FOR ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}$

INSPIRE   JSON  (beta) PDGID:

S022AV

VALUE EVTS DOCUMENT ID TECN  COMMENT $-0.25$ $\pm0.05$ 1992 1 BOURQUIN 1983 SPEC SPS hyperon beam 1  BOURQUIN 1983 assumes that $\mathit g_{2}$ = 0. Also, the sign has been changed to agree with our conventions, given in the ``Note on Baryon Decay Parameters'' in the neutron Listings.

References

Except where otherwise noted, content of the 2025 Review of Particle Physics is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy) and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2025. See LBNL disclaimers.