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arXiv 0709.4444hep-ph
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轻非奇异介子的类氢分类

Hydrogen like classification for light nonstrange mesons

S. S. Afonin

摘要:

最近的高激发态非奇异介子光谱的实验结果表明,不同的态群之间存在着高度的简并性。我们修改了一些关于这一现象的性质的建议,并将相关的想法纳入最终的形状。证明了近似质量简并的全群是$SU(2)_f\times I\times O(4)$,其中$I$是等单线态和等三线态的简并,O(4)是相对论性氢原子的简并群.我们讨论的动力学起源和后果考虑对称性,特别强调这种对称性的区别,从所谓的手征对称性恢复的情况。

英文摘要:

The recent experimental results on the spectrum of highly excited light nonstrange mesons are known to reveal a high degree of degeneracy among different groups of states. We revise some suggestions about the nature of the phenomenon and put the relevant ideas into the final shape. The full group of approximate mass degeneracies is argued to be $SU(2)_f\times I\times O(4)$, where $I$ is the degeneracy of isosinglets and isotriplets and O(4) is the degeneracy group of the relativistic hydrogen atom. We discuss the dynamical origin and consequences of considered symmetry with a special emphasis on distinctions of this symmetry from the so-called chiral symmetry restoration scenario.

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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