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Search for K_S K_S in J/psi and psi(2S) decays
J. Z. Bai, BES Collaboration
The CP violating processes J/psi-->K_S K_S and psi(2S)-->K_S K_S are searched for using samples of 58 million J/psi and 14 million psi(2S) events collected with the Beijing Spectro…
First observation of psi(2S)-->K_S K_L
J. Z. Bai
The decay psi(2S)-->K_S K_L is observed for the first time using psi(2S) data collected with the Beijing Spectrometer (BESII) at the Beijing Electron Positron Collider (BEPC); the…
Measurement of Branching Ratios for Hadronic Decays
J. Z. Bai
In a sample of 58 million events collected with the BES II detector, the process J/ is observed in five decay channels: , , $K^\…
Measurement of Inclusive Monmentum Spectra and Multiplicity Distributions of Charged Particles at GeV
BES Collaboration, J. Z. Bai
Inclusive momentum spectra and multiplicity distributions of charged particles measured with BESII detector at center of mass energies of 2.2,2.6,3.0,3.2,4.6 and 4.8 GeV are presen…
First Evidence of Lambda Lambda-bar in χ_cJ Decays
BES Collaboration, J. Z. Bai
The first observation of χ_cJ (J=0,1,2) decays to Lambda Lambda-bar is reported using ψ(2S) data collected with the BESII detector at the BEPC. The branching ratios are determined…
Search for Lepton Flavor Violation Process J/
J. Z. Bai
Using a sample of 5.8X10E7 J/ events, the Beijing Spectrometer experiment has searched for the decay J/. Four candidates, consistent with the estimated background, are…