arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.01279hep-phhep-exnucl-exnucl-th
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意外介子X,Y,Z,.(四夸克?强子分子?...)

Unexpected Mesons X, Y, Z, ... (tetraquarks? hadron molecules? ...)

Ya. I. Azimov

摘要:

这个演讲简要地讨论了最近十年发现的介子共振。在文献中,它们经常被当作四夸克或强子分子。然而,我们的考虑(使用能量-时间不确定关系)表明,对它们中的每一个最合理的描述可能是两个(或更多)分量的福克柱,其中一条线是常规的夸克-反夸克对,另一条线对应于接近其阈值的魅力(或美丽)介子-反介子对。详细调查的衰变特性可能会发现存在的几个福克组件和分离他们的贡献。

英文摘要:

This talk briefly discusses the set of meson resonances discovered in the latest decade. They are frequently treated in the literature as tetraquarks or hadron molecules. Our consideration (using the energy-time uncertainty relation) suggests, however, that the most reasonable description for each of them may be a two- (or more-) component Fock column, with one line being a conventional quark-antiquark pair, and the other line(s) corresponding to a charmed (or beauty) meson-antimeson pair near its threshold. Detailed investigation of decay properties might allow to reveal presence of several Fock components and separate their contributions.

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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