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arXiv 0909.3051hep-ex
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BABAR类粲鎓态的研究

Studies of charmonium-like states at BABAR

Arafat Gabareen Mokhtar

摘要:

在Belle和BABAR B-工厂中发现了几个高于$D\bar{D}$阈值的类charmonium态。这些态中的一些是通过初始态辐射产生的(例如Y(4260)和Y(4350)),一些是在B介子衰变中观察到的(例如X(3872)和Y(3940))。Belle对$ψ(2S)π^-$和$χ_{c1}π^-$的增强,即Z(4430)-、Z_1(4050)-和Z_2(4250)-的观测引起了极大的兴趣,因为这些态必须具有最小夸克含量$(c\bar{c}d\bar{u})$,即它们是候选的四夸克态。BABAR协作组未确认$Z(4430)^-$的存在。

英文摘要:

Several charmonium-like states above $D\bar{D}$ threshold have been discovered at the Belle and BABAR B-factories. Some of these states are produced via Initial State Radiation (e.g. Y(4260) and Y(4350)), and some are observed in B-meson decays (e.g. X(3872), and Y(3940)). The Belle observations of the enhancements in the $ψ(2S)π^-$ and $χ_{c1}π^-$, i.e. the Z(4430)-, Z_1(4050)-, and Z_2(4250)-, have generated a great deal of interest, because such states must have minimum quark content $(c\bar{c}d\bar{u})$, i.e. these are candidate four-quark state. The BABAR Collaboration does not confirm the existinence of the $Z(4430)^-$.

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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