${{\boldsymbol \Lambda}}$ DECAY PARAMETERS

See the ``Note on Baryon Decay Parameters'' in the neutron Listings. Some early results have been omitted.

$\alpha _{+}$ FOR ${{\overline{\boldsymbol \Lambda}}}$ $\rightarrow$ ${{\overline{\boldsymbol p}}}{{\boldsymbol \pi}^{+}}$ INSPIRE search

VALUE EVTS DOCUMENT ID TECN  COMMENT
$-0.758$ $\pm0.010$ $\pm0.007$ 420k
ABLIKIM
2019BJ
BES3 ${{\mathit J / \psi}}$ to ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-0.755$ $\pm0.083$ $\pm0.063$ $\approx{}$8.7k
ABLIKIM
2010
BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$
$-0.63$ $\pm0.13$ 770
TIXIER
1988
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$
  References:
ABLIKIM 2019BJ
NATP 15 631
ABLIKIM 2010
PR D81 012003 Measurement of the Asymmetry Parameter for the Decay ${{\overline{\mathit \Lambda}}}$ $\rightarrow$ ${{\overline{\mathit p}}}{{\mathit \pi}^{+}}$
TIXIER 1988
PL B212 523 Looking at $\mathit CP$ Invariance and Quantum Mechanics in ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$ Decay