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

$\alpha\mathrm {({{\mathit \Omega}^{-}})}$ $\alpha _{−}({{\mathit \Lambda}}$) FOR ${{\mathit \Omega}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}^{-}}$ INSPIRE search

Some early results have been omitted.
S024ALO
VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 0.0115 \pm0.0015}$ OUR AVERAGE
$0.0133$ $\pm0.0033$ $\pm0.0052$ 960k 1
CHEN
2005
HYCP ${{\mathit p}}{}^{}\mathrm {Cu}$, 800 GeV
$0.0114$ $\pm0.0012$ $\pm0.0010$ 4.5M 1
LU
2005A
 HYCP ${{\mathit p}}{}^{}\mathrm {Cu}$, 800 GeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-0.018$ $\pm0.030$ 6953
CHAN
1998
E756 ${{\mathit p}}{}^{}\mathrm {Be}$, 800 GeV
$-0.022$ $\pm0.051$ 1743
LUK
1988
SPEC ${{\mathit p}}{}^{}\mathrm {Be}$ 400 GeV
$-0.016$ $\pm0.018$ 12k
BOURQUIN
1984
SPEC SPS hyperon beam
1  The results of CHEN 2005 and LU 2005A are from different experimental runs.
  References:
CHEN 2005
PR D71 051102 Measurement of the $\alpha $ Asymmetry Parameter for the ${{\mathit \Omega}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}^{-}}$ Decay
LU 2005A
PL B617 11 Observation of Parity Violation in the ${{\mathit \Omega}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}^{-}}$ Decay
CHAN 1998
PR D58 072002 Measurement of the Properties of the ${{\overline{\mathit \Omega}}^{+}}$ and ${{\mathit \Omega}^{-}}$ Hyperons
LUK 1988
PR D38 19 New Measurement of Properties of ${{\mathit \Omega}^{-}}$ Hyperon
BOURQUIN 1984
NP B241 1 Measurement of ${{\mathit \Omega}^{-}}$ Decay Properties in the CERN SPS Hyperon Beam
Also
PL 87B 297 A Measurement of the ${{\mathit \Omega}^{-}}$ Lifetime