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arXiv 2401.02622nucl-th
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使用团簇有效场理论研究弹性 p-12C 散射

Elastic p-12C scattering by using a cluster effective field theory

Eun Jin In, Tae-Sun Park, Young-Ho Song, Seung-Woo Hong

AI总结:

本文使用团簇有效场理论研究低能弹性 p-12C 散射,将 13N 低能共振态作为自由度,通过库仑修正有效范围参数拟合拉格朗日量常数,理论预测与实验数据及 R-matrix 相移高度吻合。

摘要:

本文使用团簇有效场理论(EFT)研究了低能下的弹性 p-12C 散射,其中将 13N 的低能共振态(s1/2、p3/2、d5/2)作为相关的自由度进行处理。拉格朗日量的低能常数以库仑修正的有效范围参数表达,这些参数被确定用于重现微分截面的实验数据。所得的理论预测与实验数据非常吻合。结果表明,该理论给出的相移与从 R-matrix 方法获得的相移几乎相同。此外,还讨论了 13N 基态在阈值以下的作用以及 EFT 幂次计数中的次领头阶。

英文摘要:

The elastic p-12C scattering at low energies is studied by using a cluster effective field theory (EFT), where the low-lying resonance states (s1/2, p3/2, d5/2) of 13N are treated as pertinent degrees of freedom. The low-energy constants of the Lagrangian are expressed in terms of the Coulomb-modified effective range parameters, which are determined to reproduce the experimental data for the differential cross-sections. The resulting theoretical predictions agree very well with the experimental data. The resulting theory is shown to give us almost identical phase shifts as obtained from the R-matrix approach. The role of the ground state of 13N below the threshold and the next-to-leading order in the EFT power counting are also discussed.

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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