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arXiv 2408.14760nucl-th
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介子Ca原子谱与核密度分布之间的关系

Interrelation between $\bar{p}$-Ca Atom Spectra and Nuclear Density Profiles

Tokyo Institute of Technology(东京工业大学);Kyoto Sangyo University(京都产业大学);Nara Women’s University(奈良女子大学)

Kenta Yoshimura, Shunsuke Yasunaga, Daisuke Jido, Junko Yamagata-Sekihara, Satoru Hirenzaki

AI总结:

本文通过光学模型研究Ca原子谱,揭示强移位和能级宽度与核密度分布的关系,为理解钙同位素核结构提供新视角。

摘要:

本文研究了Ca原子谱,考虑了强移位和能级宽度,使用具有多种参数系数的光学模型。光谱学量作为Dirac方程的本征值获得,其中通过核密度泛函理论计算的核密度以及异常磁矩的影响被纳入其中。结果表明,同位向项对光学势的贡献对于解释Ca和Ca之间强移位的系统性差异至关重要。此外,发现强移位和能级宽度都显著依赖于核密度分布。这些发现为核结构提供了关键见解,特别是在钙同位素背景下,通过提供对核-强子性质的更全面理解。

英文摘要:

This work studies $\bar{p}$-Ca atom spectra in light of the strong shifts and level widths, using the optical model with several types of parametric coefficients. The spectroscopic quantities are obtained as the eigenvalues of the Dirac equation, where the nuclear densities computed via nuclear Density Functional Theory and the effect of the anomalous magnetic moment are incorporated. The results indicate that the isovector term's contribution to the optical potential is crucial for explaining the systematical differences in the strong shifts between $^{40}$Ca and $^{48}$Ca. Furthermore, it is found that both the strong shifts and the level widths exhibit significant dependence on the nuclear density profiles. These findings provide critical insights into the nuclear structures, particularly in the context of Calcium isotopes, by offering a more comprehensive understanding of the underlying nuclear-hadron properties.

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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