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.
New Precise Measurements of the Xi -> lambda gamma and Xi -> sigma gamma Decay Asymmetries
ANZIVINO, Giuseppina;NAPPI, Aniello;VALDATA, Marisa
2010
Abstract
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.File in questo prodotto:
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