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BES Results on Charmonium Decays and Transitions

Frederick A. Harris
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Abstract

Results are reported based on samples of 58 million $J/ψ$ and 14 million $ψ(2S)$ decays obtained by the BESII experiment. Improved branching fraction measurements are determined, including branching fractions for $J/ψ\toπ^+π^-π^0$, $ψ(2S)\to π^0 J/ψ$, $ηJ/ψ$, $π^0 π^0 J/ψ$, anything $J/ψ$, and $ψ(2S)\toγχ_{c1},γχ_{c2}\toγγ\jpsi$. Using 14 million $ψ(2S)$ events, $f_0(980)f_0(980)$ production in $χ_{c0}$ decays and $K^*(892)^0\bar K^*(892)^0$ production in $χ_{cJ}~(J=0,1,2)$ decays are observed for the first time, and branching ratios are determined.

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Frederick A. Harris. 2004-09-29. BES Results on Charmonium Decays and Transitions. https://doi.org/10.1142/9789812702227_0209

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