First application of the dispersive optical model to (p,2p) reaction analysis within the distorted-wave impulse approximation framework
First application of the dispersive optical model to (p,2p) reaction analysis within the distorted-wave impulse approximation framework
复制标题
首次将色散光学模型应用于畸变波脉冲近似框架内的 (p,2p) 反应分析
DOI：
10.1103/physrevc.105.014622
复制
发表时间：
2022
影响因子：
3.1
通讯作者：
Dickhoff, W. H.
中科院分区：
文献类型：
--
作者：
Yoshida, K.;Atkinson, M. C.;Ogata, K.;Dickhoff, W. H.
背景：()和()反应都是为了研究核态的质子单粒子特征及其相关的光谱因子。最近，色散光学模型（DOM）被应用于（）分析，揭示了传统的单粒子重叠函数、畸变波和非定域性处理必须进一步改进才能实现定量核光谱。目的：我们将DOM波函数应用于传统（）分析，并研究描述（）截面的DOM光谱因子与（）分析结果的一致性。此外，我们还与唯象单粒子波函数和光势进行了比较。还研究了因相互作用选择而产生的不确定性。方法：我们将 DOM 波函数实现到 () 反应的非相对论扭曲波脉冲近似 (DWIA) 框架中。结果：DOMDWIA 对数据的分析生成了 0.560 的质子谱因子，该因子明显小于与 () 分析一致的 DOM 值 0.71。单粒子波函数、光势和相互作用的选择所产生的不确定性并不能解释这种不一致。结论：光谱因子的不一致表明迫切需要改进对原子核散射和由此产生的介质内相互作用的描述，并对逆运动学中该反应的分析产生相应的影响。
Background:Both () and () reactions have been performed to study the proton single-particle character of nuclear states with its related spectroscopic factor. Recently, the dispersive optical model (DOM) was applied to the () analysis revealing that the traditional treatment of the single-particle overlap function, distorted waves, and nonlocality must be further improved to achieve quantitative nuclear spectroscopy.Purpose:We apply the DOM wave functions to the traditional () analysis and investigate the consistency of the DOM spectroscopic factor that describes the () cross section with the result of the () analysis. Additionally, we make a comparison with a phenomenological single-particle wave function and optical potential. Uncertainty arising from a choice ofinteraction is also investigated.Method:We implement the DOM wave functions to the nonrelativistic distorted-wave impulse approximation (DWIA) framework for () reactions.Results:DOMDWIA analysis ondata generates a protonspectroscopic factor of 0.560, which is meaningfully smaller than the DOM value of 0.71 shown to be consistent with the () analysis. Uncertainties arising from choices of single-particle wave function, optical potential, andinteraction do not explain this inconsistency.Conclusions:The inconsistency in the spectroscopic factor suggests there is urgent need for improving the description ofscattering in a nucleus and the resulting in-medium interaction with corresponding implications for the analysis of this reaction in inverse kinematics.