Precision measurement of the $\Xi^0$ mass and the branching ratios of the decays $\Xi^0\rightarrow\Lambda\gamma$ and $\Xi^0 \rightarrow\Sigma^0\gamma$

The NA48 Collaboration:   V. Fanti - et al.

doi:doi:10.1007/s100529900232

EPJ

a
b
c
d
e
ap
st
h
plus
ds
pv
ti
qt
am
n

2024 Impact factor 4.8

Particles and Fields

Eur. Phys. J. C 12, 69-76
DOI 10.1007/s100529900232

Precision measurement of the $\Xi^0$ mass and the branching ratios of the decays $\Xi^0\rightarrow\Lambda\gamma$ and $\Xi^0 \rightarrow\Sigma^0\gamma$

The NA48 Collaboration

V. Fanti - et al.

Received: 6 August 1999 / Published online: 14 October 1999

Abstract
A new precision measurement of the $\Xi^0$ mass has been performed at the NA48 experiment at the CERN SPS. The value obtained is [1314.82 $\pm$ 0.06 (stat.) $\pm$ 0.2 (syst.)]MeV/c². The branching ratios of $\Xi^0$ radiative decays have been measured as: Br $(\Xi^0\rightarrow\Lambda\gamma)=[1.90\pm0.34 (stat.) \pm0.19 (syst.)] \cdot 10^{-3}$ and Br $(\Xi^0\rightarrow\Sigma^0\gamma)=[3.14\pm0.76 (stat.)\pm0.32 (syst.)]\cdot 10^{-3}$ .