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arXiv 0802.2762hep-ph
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$J/ψ$的弱衰变:非轻子情形

Weak decays of $J/ψ$: the non-leptonic case

Yu-Ming Wang, Hao Zou, Zheng-Tao Wei, Xue-Qian Li, Cai-Dian Lu

摘要:

在我们以前的研究中,我们使用QCD求和规则计算了$J/ψ\to D^{(*)}_{(s)}$因子的跃迁。在因子分解近似下,得到的形状因子可用于计算$J/ψ\to D^{(*)}_{(s)}+M$的弱非轻子衰变率,其中$M$代表轻赝标或矢量介子.我们预言,通过旁观者机制实现的$J/ψ$的包含非轻子两体弱衰变的分支比可以达到$1.3 \times 10^{-8}$那样大,特别是$J/ψ\to D^{*\pm}_s+ρ^\mp$的分支比可以达到$5.3 \times 10^{-9}$ .这些值将由即将开始运行的BESIII的能力略微访问。

英文摘要:

In our previous study, we calculated the transition from factors of $J/ψ\to D^{(*)}_{(s)}$ using the QCD sum rules. Based on the factorization approximation, the obtained form factors can be applied to evaluate the weak non-leptonic decay rates of $J/ψ\to D^{(*)}_{(s)}+M$, where $M$ stands for a light pseudoscalar or vector meson. We predict that the branching ratio for inclusive non-leptonic two-body weak decays of $J/ψ$ which are realized via the spectator mechanism, can be as large as $1.3 \times 10^{-8}$, in particular, the branching ratio of $J/ψ\to D^{*\pm}_s+ρ^\mp$ can reach $5.3 \times 10^{-9}$. Such values will be marginally accessed by the ability of BESIII which will begin running very soon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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