色散光学模型对CaFe实验的描述
Dispersive optical model description of the CaFe experiment
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中文总结 AI 辅助
本文利用非局域色散光学模型成功描述了CaFe实验中高动量比率与核壳层结构的关联，首次同时再现了实验数据及束缚态性质，揭示了SRC物理的关键作用。
中文摘要 AI 辅助
CaFe实验中利用高能电子散射CaFe核（即$^{40}\mathrm{Ca}$、$^{48}\mathrm{Ca}$、$^{54}\mathrm{Fe}$）测得的高动量比率揭示了核壳层结构与由短程和张量关联（SRC）产生的高动量分量之间令人惊讶的相关性。非局域色散光学模型（DOM）在同时描述这些CaFe核的束缚态性质和散射可观测量的同时，成功描述了实验测得的高动量比率。实验测得的$^{48}\mathrm{Ca}$/$^{40}\mathrm{Ca}$和$^{54}\mathrm{Fe}$/$^{48}\mathrm{Ca}$的平均高动量比率分别为$1.10~\pm~0.02$和$1.49~\pm~0.03$。相应的DOM结果为$1.05~\pm~0.05$和$1.52~\pm~0.08$，这是对这些实验结果的首个成功描述。目前对CaFe核的DOM分析依赖于DOM的扩展版本，该版本结合了可收缩几何结构，以在更高缺失能量下提供更局域化和更强的体积吸收，从而正确表征SRC物理。DOM的成功可归因于其同时处理结构和反应数据，后者要求平均场出现耗损，并在各自基态中适当混合高动量分量。
英文摘要
High-momentum ratios measured in the CaFe experiment using high-energy electron scattering off the CaFe nuclei $(i.e.~ {}^{40}\mathrm{Ca}, {}^{48}\mathrm{Ca}, {}^{54}\mathrm{Fe})$ have revealed a surprising correlation between the nuclear shell structure and the high-momentum components generated by short-range and tensor correlations (SRC). The non-local dispersive optical model (DOM) successfully describes the experimentally measured high-momentum ratios while simultaneously describing the nuclear bound-state properties and scattering observables for these CaFe nuclei. The experimentally measured average high-momentum ratio of ${}^{48}\mathrm{Ca}$/${}^{40}\mathrm{Ca}$ and ${}^{54}\mathrm{Fe}$/${}^{48}\mathrm{Ca}$ are $1.10~\pm~0.02$ and $1.49~\pm~0.03$, respectively. The corresponding DOM results are $1.05~\pm~0.05$ and $1.52~\pm~0.08$, which is the first successful description of these experimental results. The present DOM analysis of CaFe nuclei relied on an extended version of the DOM incorporating a shrinkable geometry to provide a more localized and stronger volume absorption at higher missing energies to correctly represent the SRC physics. The success of the DOM can be attributed to its simultaneous treatment of structure and reaction data, the latter requiring a depletion of the mean-field accompanied by the proper admixture of high-momentum components in the respective ground states.
发表机构
- Washington University（华盛顿大学）
- Haverford College（哈弗福德学院）
机构由 AI 辅助整理，请以论文原文为准。
