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arXiv 2201.04319hep-ph
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三味手征拉格朗日量与大Nc求和规则

The chiral Lagrangian with three flavors and large-Nc sum rules

Yonggoo Heo, C. Kobdaj, Matthias F. M. Lutz

摘要:

我们重新考虑了具有三味重子场的手征拉格朗日量。本文系统地分析了次主导阶重子八重态和十重态场中对轴矢量流和赝标流有贡献的所有LEC。虽然有4个LEC相关的主导秩序,相关的LEC在次主导手性秩序的数量是23。对于这些,一个领先的顺序大$N_c$分析预测3和18总和规则分别。在下一个精度级别,求和规则的数量减少到2和8。我们的结果说明了一个树级的分析可用的轴矢量耦合常数和强衰变宽度的重子十重态。

英文摘要:

We reconsider the chiral Lagrangian with three-flavor baryon fields. A systematic analysis of all LEC that contribute to the axial-vector and pseudoscalar currents in the baryon octet and decuplet fields at next-to-leading order is performed. While there are 4 LEC relevant at leading order, the number of relevant LEC at subleading chiral order is 23. For those a leading order large-$N_c$ analysis predicts 3 and 18 sum rules respectively. At the next accuracy level the number of sum rules is reduced to 2 and 8. Our results are illustrated by a tree-level analysis of available axial-vector coupling constants and strong decay widths of the baryon decuplet states.

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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