${{\mathit \Xi}}$ 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 search

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:
BOURQUIN 1983
ZPHY C21 1 Measurements of Hyperon Semileptonic Decays at the CERN Super Proton Synchrotron. 2. The ${{\mathit \Lambda}}$ $\rightarrow$ ${{\mathit p}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}$, ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}$, and ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit \Sigma}^{0}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{{e}}}}$ Decay Modes