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arXiv 0705.0624hep-ph
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低能张量介子交换

Tensor meson exchange at low energies

G. Ecker, C. Zauner

摘要:

通过包含所有轨道角动量小于或等于1的夸克-反夸克束缚态,我们完成了介子共振对O(p^4)手征低能常数贡献的分析。不同的张量介子拉格朗日在以前的工作中所使用的产生相同的最终结果的低能常数,一旦QCD短距离的约束适当实施。我们还讨论了具有奇C宇称的轴矢量介子的可能相关性。

英文摘要:

We complete the analysis of meson resonance contributions to chiral low-energy constants of O(p^4) by including all quark-antiquark bound states with orbital angular momentum less or equal to one. Different tensor meson Lagrangians used in previous work are shown to produce the same final results for the low-energy constants once QCD short-distance constraints are properly implemented. We also discuss the possible relevance of axial-vector mesons with odd C-parity.

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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