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Observation of the rare decay $K_{S} \rightarrow \pi^0 e^{+}e^{-}$
A search for the decay $K_{S} \rightarrow \pi^0 e^{+}e^{-}$ has been made by the NA48/1 experiment at the CERN SPS accelerator. Using data collected during 89 days in 2002 with a high-intensity $K_{S}$ beam, 7 events were found with a background of 0.15 events. The branching fraction $BR(K_{S} \righ...
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Lenguaje: | eng |
Publicado: |
2003
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2003.10.001 http://cds.cern.ch/record/645655 |