标题： $J/ψ\to ωK^+K^-$的研究 显示英文标题

标题： Study of $J/ψ\to ωK^+K^-$

摘要： 新的数据来自在BEPC升级后的BES II探测器中采集的58M个$J/\psi$事件，对$J/\psi \to \omega K^+K^-$的研究结果如下。对于$f_0(1710) \to K^+K^-$存在一个显著信号，在更高质量处有一个峰，可能可以用$f_2(2150) \to K\bar K$进行拟合。通过与$\omega \pi ^+ \pi ^-$数据的联合分析，分支比$BR(f_0(1710)\to\pi\pi)/BR(f_0(1710) \to K\bar K)$在95%置信度下为$< 0.11$。 显示英文摘要

摘要： New data are presented on $J/\psi \to \omega K^+K^-$ from a sample of 58M $J/\psi$ events in the upgraded BES II detector at the BEPC. There is a conspicuous signal for $f_0(1710) \to K^+K^-$ and a peak at higher mass which may be fitted with $f_2(2150) \to K\bar K$. From a combined analysis with $\omega \pi ^+ \pi ^-$ data, the branching ratio $BR(f_0(1710)\to\pi\pi)/BR(f_0(1710) \to K\bar K)$ is $< 0.11$ at the 95% confidence level.