${{\boldsymbol \Xi}^{-}}$ DECAY PARAMETERS

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

$\alpha $ FOR ${{\boldsymbol \Xi}^{-}}$ $\rightarrow$ ${{\boldsymbol \Lambda}}{{\boldsymbol \pi}^{-}}$ INSPIRE search

The above average, $\alpha\mathrm {({{\mathit \Xi}^{-}})}$ $\alpha _{−}({{\mathit \Lambda}}$) = $-0.294$ $\pm0.005$ , divided by our current average $\alpha _{−}({{\mathit \Lambda}}$) = $0.750$ $\pm0.010$ , gives the following value for $\alpha\mathrm {({{\mathit \Xi}^{-}})}$:
VALUE
$\bf{ -0.392 \pm0.008}$ OUR EVALUATION