${{\mathit \Xi}^{0}}$ DECAY PARAMETERS

See the ``Note on Baryon Decay Parameters'' in the neutron Listings.

$\mathit A_{CP}$ FOR ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}^{0}}$, ${{\overline{\mathit \Xi}}^{0}}$ $\rightarrow$ ${{\overline{\mathit \Lambda}}}{{\mathit \pi}^{0}}$ INSPIRE search

$\mathit A_{CP}$ = (${{\mathit \alpha}}$ + ${{\overline{\mathit \alpha}}}$) $/$ (${{\mathit \alpha}}$ $−$ ${{\overline{\mathit \alpha}}}$)
S023A00
VALUE ($ 10^{-3} $) EVTS DOCUMENT ID TECN  COMMENT
$-5.4$ $\pm6.5$ $\pm3.1$ 327k 1
ABLIKIM
2023AU
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Xi}^{0}}{{\overline{\mathit \Xi}}^{0}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-7$ $\pm82$ $\pm25$ 1.9k 1
ABLIKIM
2023AD
BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \Xi}^{0}}{{\overline{\mathit \Xi}}^{0}}$
1  Probing $\mathit CP$ symmetry and weak phases with entangled double-strange baryons.
  References:
ABLIKIM 2023AU
PR D108 L031106 Tests of $CP$ symmetry in the entangled $\Xi^0-\bar{\Xi}^0$ Pairs
ABLIKIM 2023AD
PR D108 L011101 First simultaneous measurement of ?0 and ?¯0 asymmetry parameters in ?(3686) decay