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

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

$\phi $ ANGLE FOR ${{\overline{\mathit \Xi}}^{0}}$ $\rightarrow$ ${{\overline{\mathit \Lambda}}}{{\mathit \pi}^{0}}$ with tan ${{\mathit \phi}}$ = ${{\mathit \beta}}/{{\mathit \gamma}}$ INSPIRE search

S023A01

VALUE (degrees)

EVTS

DOCUMENT ID

TECN

COMMENT

$-0.304$ $\pm0.556$ $\pm0.109$

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. • • •

$-10.60$ $\pm6.65$ $\pm0.97$

1.9k

BES3

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

References:

ABLIKIM

PR D108 L011101

First simultaneous measurement of

?^{0}

and

{\overset{�}{?}}^{0}

asymmetry parameters in

? (3686)

decay

PR D108 L031106

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