EPJ

2023 Impact factor 4.2
EPJ C - Particles and Fields
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 $(\Xi^0\rightarrow\Sigma^0\gamma)=[3.14\pm0.76 (stat.)\pm0.32 (syst.)]\cdot 10^{-3}$.

Copyright Springer-Verlag 2000

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