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

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 Older, outdated results have been omitted.

$\phi $ ANGLE FOR ${{\boldsymbol \Sigma}^{-}}$ $\rightarrow$ ${{\boldsymbol n}}{{\boldsymbol \pi}^{-}}$ (tan$\phi $ = $\beta $ $/$ $\gamma $) INSPIRE search

VALUE ($^\circ{}$) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 10 \pm15}$ OUR AVERAGE
$+5$ $\pm23$ 1092 1
BERLEY
1970B
HBC ${{\mathit n}}$ rescattering
$14$ $\pm19$ 1385
BANGERTER
1969B
HBC ${{\mathit K}^{-}}{{\mathit p}}$ 0.4 ${\mathrm {GeV/}}\mathit c$
1  BERLEY 1970B changed from $-5$ to $+5^\circ{}$ to agree with our sign convention.
  References:
BERLEY 1970B
PR D1 2015 Decay Parameters in the Nonleptonic Decay Modes of the Charged ${{\mathit \Sigma}}$ Hyperons
BANGERTER 1969B
PR 187 1821 Decay Parameters for ${{\mathit \Sigma}^{\pm}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{\pm}}$