The decay asymmetries of the weak radiative hyperon decays Ξ0→Λγ and Ξ0→Σ0γ have been measured with high precision using data of the NA48/1 experiment at CERN. From about 52 000 Ξ0→Λγ and 15 000 Ξ0→Σ0γ decays, we obtain for the decay asymmetries αΞ0→Λγ=-0.704±0.019stat±0.064syst and αΞ0→Σ0γ=-0.729±0.030stat±0.076syst, respectively. These results are in good agreement with previous experiments, but more precise.
|Original language||English (US)|
|Number of pages||8|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Oct 2010|
- Decay asymmetry
ASJC Scopus subject areas
- Nuclear and High Energy Physics