${{\mathit \Xi}^{0}}$ DECAY PARAMETERS
See the ``Note on Baryon Decay Parameters'' in the neutron Listings.
$\alpha $ FOR ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{0}}{{\mathit \gamma}}$
INSPIRE search
See the note above on ``Radiative Hyperon Decays.''
| S023AG |
| $\bf{
-0.69 \pm0.06}$
|
OUR AVERAGE
|
| $-0.729$ $\pm0.030$ $\pm0.076$ |
15k |
1 |
|
NA48 |
| $-0.63$ $\pm0.08$ $\pm0.05$ |
4045 |
|
|
KTEV |
| • • • We do not use the following data for averages, fits, limits, etc. • • • |
| $+0.20$ $\pm0.32$ $\pm0.05$ |
85 |
2 |
|
SPEC |
|
1
BATLEY 2010B also measured the ${{\overline{\mathit \Xi}}^{0}}$ $\rightarrow$ ${{\overline{\mathit \Sigma}}^{0}}{{\mathit \gamma}}$ asymmetry to be $-0.786$ $\pm0.104$ (no systematic error given) with 1404 events.
|
|
2
This result has been withdrawn, due to an error. See the erratum, TEIGE 2002.
|
|
| References: |
|
|
PL B693 241
|
New Precise Measurements of the ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \gamma}}$ and ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{0}}{{\mathit \gamma}}$ Decay Asymmetries |
|
|
PRL 86 3239
|
Measurement of the Branching Ratio and Asymmetry of the Decay ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{0}}{{\mathit \gamma}}$ |
|
|
PRL 63 2717
|
Measurement of the ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Sigma}^{0}}{{\mathit \gamma}}$ Branching Ratio and Asymmetry Parameter |
|
