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arXiv 2103.06786nucl-thhep-exhep-phnucl-ex
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$^{40}$Ca中纵向响应函数的从头计算

Ab initio computation of the longitudinal response function in $^{40}$Ca

J. E. Sobczyk, B. Acharya, S. Bacca, G. Hagen

AI总结:

本文结合耦合簇与Lorentz积分变换方法,基于手征核力从头计算$^{40}$Ca纵向响应函数,验证表明准弹性峰与实验吻合且末态相互作用关键。

摘要:

我们从手征两核子和三核子相互作用出发,利用耦合簇方法和Lorentz积分变换方法,对$^{40}$Ca中的纵向响应函数$R_L$进行了一致的从头计算。我们通过将$^4$He中$R_L$以及$^{40}$Ca中Coulomb求和规则的结果与实验数据和其他计算进行比较,验证了我们的方法。对于$^{40}$Ca中的$R_L$,我们在直到中等动量转移的准弹性峰区域获得了与实验非常好的一致,并发现末态相互作用对于准确描述数据至关重要。这项工作是迈向与实验长基线中微子计划相关的中微子–核截面从头计算的一个里程碑。

英文摘要:

We present a consistent \emph{ab initio} computation of the longitudinal response function $R_L$ in $^{40}$Ca using the coupled-cluster and Lorentz integral transform methods starting from chiral nucleon-nucleon and three-nucleon interactions. We validate our approach by comparing our results for $R_L$ in $^4$He and the Coulomb sum rule in $^{40}$Ca against experimental data and other calculations. For $R_L$ in $^{40}$Ca we obtain a very good agreement with experiment in the quasi-elastic peak up to intermediate momentum transfers, and we find that final state interactions are essential for an accurate description of the data. This work presents a milestone towards \emph{ab initio} computations of neutrino-nucleus cross sections relevant for experimental long-baseline neutrino programs.

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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