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arXiv 1708.02679hep-phhep-ex
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重夸克混合质量分裂:超精细和“超精细”

Heavy-Quark Hybrid Mass Splittings: Hyperfine and "Ultrafine"

Richard F. Lebed, Eric S. Swanson

摘要:

有人认为,QCD的重夸克极限要求在重夸克混合介子多重态的超精细质量分裂的某种组合是非常小的。这一观测将有助于在PANDA等设施上探索重夸克混合谱。另一种可能是,这种质量分裂的测量值很大,表明多重态中至少有一个成员必须包含重要的光夸克自由度。

英文摘要:

It is argued that the heavy-quark limit of QCD requires a certain combination of hyperfine mass splittings in heavy-quark hybrid-meson multiplets to be unusually small. This observation will assist in the exploration of the heavy-quark hybrid spectrum at facilities such as PANDA. Alternatively, a large measured value for this mass splitting indicates that at least one member of the multiplet must contain significant light-quark degrees of freedom.

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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