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arXiv 2105.04490nucl-thnucl-ex
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$^{11}\rm Be$和$^{15}\rm C$单中子敲除反应的晕有效场论分析

Halo effective field theory analysis of one-neutron knockout reactions of $^{11}\rm Be$ and $^{15}\rm C$

Chloë Hebborn, Pierre Capel

摘要:

背景:单核子敲除反应提供了关于核的单粒子结构的深刻信息。当应用于单中子晕核时,它们是纯粹的外围,这表明它们可以通过在晕有效场论(Halo-EFT)中描述抛射体来适当地建模。目的:我们重新分析了在60 MeV/核子附近的铍上的$^{11}$ Be和$^{15}$ C的单中子晕核的单中子敲除测量。我们认为Halo-EFT描述这些核已经提供了很好的协议与分裂和转移数据。方法:我们包括一个晕EFT描述的弹丸内的eikonal为基础的模型的反应,并比较其结果与现有的数据。结果:与实验结果吻合良好。从这种比较推断的渐近归一化系数证实了从\emph{ab initio}核结构计算和从转移数据推导的值的预测。结论:Halo-EFT可以可靠地用于分析测量晕核的单中子敲除反应,并根据这些实验数据测试最先进的原子核结构模型的预测。

英文摘要:

Background: One-nucleon knockout reactions provide insightful information on the single-particle structure of nuclei. When applied to one-neutron halo nuclei, they are purely peripheral, suggesting that they could be properly modeled by describing the projectile within a Halo Effective Field Theory (Halo-EFT). Purpose: We reanalyze the one-neutron knockout measurements of $^{11}$Be and $^{15}$C-both one-neutron halo nuclei-on beryllium at about 60MeV/nucleon. We consider Halo-EFT descriptions of these nuclei which already provide excellent agreement with breakup and transfer data. Method: We include a Halo-EFT description of the projectile within an eikonal-based model of the reaction and compare its outcome to existing data. Results: Excellent agreement with experiment is found for both nuclei. The asymptotic normalization coefficients inferred from this comparison confirm predictions from \emph{ab initio} nuclear-structure calculations and values deduced from transfer data. Conclusions: Halo-EFT can be reliably used to analyze one-neutron knockout reactions measured for halo nuclei and test predictions from state-of-the-art nuclear structure models on these experimental data.

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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