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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 Older, outdated results have been omitted.

$\mathit f_{2}(0)/\mathit f_{1}$(0) FOR ${{\mathit \Sigma}^{-}}$ $\rightarrow$ ${{\mathit n}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{e}}}$

INSPIRE   PDGID:

S020F2

The signs have been changed to be in accord with our conventions, given in the ``Note on Baryon Decay Parameters'' in the neutron Listings.

VALUE EVTS DOCUMENT ID TECN  COMMENT $\bf{ 0.97 \pm0.14}$ OUR AVERAGE $+0.96$ $\pm0.07$ $\pm0.13$ 50k HSUEH 1988 SPEC ${{\mathit \Sigma}^{-}}$ 250 GeV $+1.02$ $\pm0.34$ 4456 BOURQUIN 1983 C SPEC SPS hyperon beam

References:

HSUEH 1988 PR D38 2056 High Precision Measurement of Polarized ${{\mathit \Sigma}^{-}}$ $\beta $ Decay BOURQUIN 1983C ZPHY C21 17 Measurements of Hyperon Semileptonic Decays at the CERN Super Proton Synchrotron. 3. The ${{\mathit \Sigma}^{-}}$ $\rightarrow$ ${{\mathit n}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{e}}}$ Decay Mode

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