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arXiv 1008.3569hep-ex
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Charmonium在中国:BEPCII/BESIII

Charmonium in China: BEPCII/BESIII

Frederick A. Harris

摘要:

本文报道了BEPCII用BESIII探测器获得的106 M $ψ'$事件和大约226 M $J/ψ$事件的结果,包括确认了BESII $p\bar{p}$阈值在$J/ψ\to γp\bar{p}$中的增强,$χ_{cJ} \to π^0 π^0$和$ηη$的分支比,$ψ' \to π^0 h_c$和$h_c \to γη_c$分支比的首次测量,以及$h_c$的质量和宽度的测量。还报道了双光子过程$ψ' \to γγJ/ψ$和$f_0(980) - a_0(980)$混合的首次观测。

英文摘要:

Results based on 106 M $ψ'$ events and about 226 M $J/ψ$ events acquired with the BESIII detector at BEPCII are reported, including a confirmation of the BESII $p\bar{p}$ threshold enhancement in $J/ψ\to γp\bar{p}$, branching ratios for $χ_{cJ} \to π^0 π^0$ and $ηη$, and first measurements of the branching ratios for $ψ' \to π^0 h_c$ and $h_c \to γη_c$, as well as measurements of the mass and width of the $h_c$. Also reported are first observations of the two photon process $ψ' \to γγJ/ψ$ and $f_0(980) - a_0(980)$ mixing.

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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