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

See the ``Note on Baryon Decay Parameters'' in the neutron Listings. Older, outdated results have been omitted.

$\alpha _{−}$ FOR ${{\boldsymbol \Sigma}^{-}}$ $\rightarrow$ ${{\boldsymbol n}}{{\boldsymbol \pi}^{-}}$ INSPIRE search

VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.068 \pm0.008}$ OUR AVERAGE
$-0.062$ $\pm0.024$ 28k
HANSL
1978
HBC ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}^{-}}{{\mathit \pi}^{+}}$
$-0.067$ $\pm0.011$ 60k
BOGERT
1970
HBC ${{\mathit K}^{-}}{{\mathit p}}$ 0.4 ${\mathrm {GeV/}}\mathit c$
$-0.071$ $\pm0.012$ 51k
BANGERTER
1969
HBC ${{\mathit K}^{-}}{{\mathit p}}$ 0.4 ${\mathrm {GeV/}}\mathit c$
  References:
HANSL 1978
NP B132 45 ${{\mathit \Sigma}^{-}}$ Production and Decay Properties in ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}^{-}}{{\mathit \pi}^{+}}$
BOGERT 1970
PR D2 6 Measurement of the Pionic and Leptonic Decay Asymmetries of Polarized ${{\mathit \Sigma}^{-}}$ with a PEPR System
BANGERTER 1969
Thesis UCRL 19244 Nonleptonic Decay of ${{\mathit \Sigma}}$ Hyperons