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

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

$\Delta \Phi $ = $\Phi _{E}$ $−$ $\Phi _{M}$ in ${{\boldsymbol \Lambda}}$ $\rightarrow$ ${{\boldsymbol p}}{{\boldsymbol \pi}^{-}}$ , ${{\overline{\boldsymbol \Lambda}}}$ $\rightarrow$ ${{\overline{\boldsymbol p}}}{{\boldsymbol \pi}^{+}}$ INSPIRE search

VALUE (degrees) DOCUMENT ID TECN  COMMENT
$37$ $\pm12$ $\pm6$ 1
ABLIKIM
2019BF
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\overline{\mathit \Lambda}}}{{\mathit \Lambda}}$ at $\sqrt {s }$ = 2.396 GeV
1  Relative phase between GE and GM, determined using the latest BES-III value on the asymmetry parameter ${{\mathit \alpha}}$ = $0.750$ $\pm0.010$.
  References:
ABLIKIM 2019BF
PRL 123 122003 Complete Measurement of the $\Lambda$ Electromagnetic Form Factors