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

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 Older, outdated results have been omitted.

$\alpha _{−}$ FOR ${{\mathit \Sigma}^{-}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{-}}$

INSPIRE   PDGID:

S020A-

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

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