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New precise measurements of the and decay asymmetries
- Source :
- Physics Letters B. 693:241-248
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- The decay asymmetries of the weak radiative hyperon decays Ξ 0 → Λ γ and Ξ 0 → Σ 0 γ have been measured with high precision using data of the NA48/1 experiment at CERN. From about 52 000 Ξ 0 → Λ γ and 15 000 Ξ 0 → Σ 0 γ decays, we obtain for the decay asymmetries α Ξ 0 → Λ γ = − 0.704 ± 0.019 stat ± 0.064 syst and α Ξ 0 → Σ 0 γ = − 0.729 ± 0.030 stat ± 0.076 syst , respectively. These results are in good agreement with previous experiments, but more precise.
Details
- ISSN :
- 03702693
- Volume :
- 693
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi...........1d46f412367c5d6487696eed6f6fa177