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Measurement of the $\Xi^{0} \to \Lambda\gamma$ decay asymmetry and branching fraction / NA48 Collaboration
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative hyperon decay $\Xi^{0} \to \Lambda\gamma$ have been found with an estimated background of $58 \pm 8$ events. From these events the $\Xi^{0} \to \Lambda\gamma$ decay asymmetry has been determined to $\alpha(\Xi^{0} \to \Lambda\gamma) = -0.78 \pm 0.18_{stat} \pm 0.06_{syst}$, which is the first evidence of a decay asymmetry in $\Xi^{0} \to \Lambda\gamma$. [...]
hep-ex/0401027; CERN-EP-2003-078.- Geneva : CERN, 2004 - 15 p. - Published in : Phys. Lett. B 584 (2004) 251-259 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ex/0401027 PDF

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