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arXiv 2602.12879nucl-th
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次主导的D型三核相互作用

Subleading D-like Three-Nucleon Interactions

Ruhr-Universität Bochum(波鸿鲁尔大学)

Henri Paul Huesmann, Hermann Krebs, Evgeny Epelbaum

AI总结:

该研究通过次谐展开第五阶的树级图,探讨了三核力中D型相互作用的低能常数参数化方法。

摘要:

我们考虑了来自单介子交换和两个核子之间的接触相互作用的树级图对三核力的次主导贡献,这些贡献出现在次谐展开的第五阶。我们证明对应的D型三核势依赖于16个低能常数,这些常数需要从少体数据中确定。假设它们的数值由中间Δ(1232)激发机制支配,所考虑的三核力可以使用4个低能常数近似表示,这些常数参数化了短程核子-核子到核子-Δ过渡幅度。

英文摘要:

We consider subleading contributions to the three-nucleon force from tree-level diagrams involving a single-pion exchange and a contact interaction between two nucleons, which appear at fifth order in the chiral expansion. We show that the corresponding D-like three-nucleon potential depends on 16 low-energy constants, which need to be determined from few-body data. Assuming that their numerical values are governed by the intermediate Δ(1232) excitation mechanism, the considered three-nucleon force can be approximated using 4 low-energy constants that parametrize the short-range nucleon-nucleon to nucleon-Δ transition amplitude.

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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