Search for KS KS in J/psi and psi(2S) decays
Abstract
The CP violating processes J/psi-->KS KS and psi(2S)-->KS KS are searched for using samples of 58 million J/psi and 14 million psi(2S) events collected with the Beijing Spectrometer at the Beijing Electron Positron Collider. No signal is observed, and upper limits on the decay branching ratios are determined to be BR(J/psi-->KS KS) < 1.0x10-6 and BR(psi(2S)-->KS KS) < 4.6x10-6 at the 95% confidence level.
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