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

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

$\Delta {{\mathit \phi}_{{{CP}}}}({{\mathit \Xi}^{0}}$) = ( $\phi _{{{\overline{\mathit \Xi}}^{0}}}$ + $\phi _{{{\mathit \Xi}^{0}}}$ )/2 INSPIRE search

S023A02

VALUE (degrees)

EVTS

DOCUMENT ID

TECN

COMMENT

$-0.006$ $\pm0.395$ $\pm0.052$

327k

BES3

${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Xi}^{0}}{{\overline{\mathit \Xi}}^{0}}$

• • • We do not use the following data for averages, fits, limits, etc. • • •

$-4.53$ $\pm4.70$ $\pm0.57$

1.9k

BES3

${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \Xi}^{0}}{{\overline{\mathit \Xi}}^{0}}$

¹ Converted from radians to degrees.

References:

ABLIKIM

PR D108 L031106

Tests of $CP$ symmetry in the entangled $\Xi^0-\bar{\Xi}^0$ Pairs

PR D108 L011101

First simultaneous measurement of

?^{0}

and

{\overset{�}{?}}^{0}

asymmetry parameters in

? (3686)

decay