Search for the decay KS→ 2γ
Vasserman I. B., Golubev V. B., Gluskin E. S., Druzhinin V. P., Ivanchenko V. N., Pakhtusova E. V., Peryshkin A. N., Red'ko I. Yu., Serednyakov S. I., Sidorov V. A., Shatunov Yu. M.
An upper limit has been found for the branching ratio for the decay Κ3—>2γ in an experiment on the reaction e+e~~^xf)—>KsKL in the neutral detector at the VEPP-2M e+e" storage ring. This limit is Β(Κ3-+2γ) < 2X 10~4 at a 90% confidence level