论文标题
由于杜特隆核反应中不可还原的三体力而量化的不确定性
Quantifying uncertainties due to irreducible three-body forces in deuteron-nucleus reactions
论文作者
论文摘要
\ noindent {\ bf背景：} deuteron诱导的核反应是探测核结构以及天体物理信息（例如$（n，γ）$横截面）的必不可少的工具。通常在Faddeev三体模型中描述了Deuteron-Nucleus系统，该模型由中子（$ n $），质子（$ p $）和靶核（$ a $）组成，并通过成对现象学潜力相互作用。虽然Faddeev技术可以确切地描述三体动力学，但其预测能力受到一定程度的限制，部分原因是省略了不可约的中子 - 核核核心三体力量（$ n $ - $ p $ -p $ - $ 3bf）。 {\ bf结果：}通过比较FADDEEV和NCSM/RGM结果，我们表明，不可约合$ n $ -p $ - $ p $ - $α$ 3BF对界限和散射可观察到的效果不可忽略。具体而言，FADDEEV方法％的收益率为$^6 $ li地面状态，比使用NCSM/RGM获得的$ 600 $ 〜KEV浅。此外，与NCSM/RGM的结果相比，$ D $+$α$散射的Faddeev计算产生的能量高约400美元。使用两种方法计算的$ d $+$α$角度分布的形状也有所不同，这是由于预测$ 3^+$ resonance Energy的差异。
\noindent{\bf Background:} Deuteron-induced nuclear reactions are an essential tool for probing the structure of nuclei as well as astrophysical information such as $(n,γ)$ cross sections. The deuteron-nucleus system is typically described within a Faddeev three-body model consisting of a neutron ($n$), a proton ($p$), and the target nucleus ($A$) interacting through pairwise phenomenological potentials. While Faddeev techniques enable the exact description of the three-body dynamics, their predictive power is limited in part by the omission of irreducible neutron-proton-nucleus three-body force ($n$-$p$-$A$ 3BF). {\bf Results:} By comparing the Faddeev and NCSM/RGM results, we show that the irreducible $n$-$p$-$α$ 3BF has a non-negligible effect on bound state and scattering observables alike. Specifically, the Faddeev approach %are yields a $^6$Li ground state that is approximately $600$~keV shallower than the one obtained with the NCSM/RGM. Additionally, the Faddeev calculations for $d$+$α$ scattering yield a $3^+$ resonance that is located approximately $400$~keV higher in energy compared to the NCSM/RGM result. The shape of the $d$+$α$ angular distributions computed using the two approaches also differ, owing to the discrepancy in the predictions of the $3^+$ resonance energy.
