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短程三核子力的光谱学基础

Spectroscopic basis for short-range three-nucleon forces

Josep Solà Cava, Arseniy A. Filin, Sven Heihoff, Henri Paul Huesmann, Evgeny Epelbaum

arXiv 2607.26958首次发表:更新:

AI 中文总结

研究人员提出次领头阶接触型三核子力的光谱学基础,借此构建核子-氘核散射模拟器,从弹性核子-氘核散射数据中可靠确定13个低能常数里的9个。

AI 中文摘要

我们引入了次领头阶接触型三核子力的光谱学基础,该基础可通过总角动量和宇称量子数清晰地对这些相互作用进行分类。利用这一新基础,我们探究了核子-氘核观测量对三核子短程相互作用的敏感性。由于光谱学基础中变量参数空间的低维度,我们可采用径向基函数插值构建简单的核子-氘核散射模拟器。我们对次领头阶接触型三核子相互作用开展了探索性拟合,结果表明从弹性核子-氘核散射数据中可可靠确定13个低能常数中的9个。

英文摘要

We introduce a spectroscopic basis for the subleading contact three-nucleon forces, which allows one to classify these interactions according to the total angular momentum and parity quantum numbers in a transparent way. Using this new basis, we explore the sensitivity of nucleon-deuteron observables to the three-nucleon short-range interactions. The low dimensionality of the variable-parameter space in the spectroscopic basis allows us to build a simple nucleon-deuteron scattering emulator using radial basis function interpolation. We perform exploratory fits of the subleading contact three-nucleon interactions and demonstrate that 9 of 13 low-energy constants can be reliably determined from elastic nucleon-deuteron scattering data.

Comments26 pages, 19 figures, 5 tables; updated fit results

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