Shen, XY (reprint author), Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China.
Article; Proceedings Paper
We report partial wave analysis results for J/psi --> gammaK(+)K(-) based on 7.8 x 10(6) BESI J/psi events, and find 0(++) to be dominant in the f(J)(1710) mass region. Some very preliminary results are presented from the 2.2 x 10(7) J/psi events newly collected at the upgraded BES(BESII). Using the world largest psi (2S) data sample, BES measures branching ratios of psi (2S) radiative and hadronic decays. The preliminary R values measured by BESII in the 2-5 GeV energy region are also presented.