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Search for the decay $K_{S} \to \pi^{0} \gamma\gamma$
A search for the decay $K_{S} \to \pi^{0} \gamma\gamma$ has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity $K_{S}$ beam, an upper limit for the branching ratio $BR(K_{S} \to \pi^{0} \gamma\gamma, z \geq 0.2) < 3.3 \times...
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