Charge asymmetry of the nuclear interaction and neutron-neutron scattering parameters.
Charge asymmetry of the nuclear interaction and neutron-neutron scattering parameters.
复制标题
核相互作用的电荷不对称性和中子-中子散射参数。
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
Gabioud
中科院分区：
文献类型：
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作者：
de Téramond GF;Gabioud
束缚系统和低能散射实验的分析给出了明确的证据，偏离电荷对称性的核相互作用。此外，这种效应可以在核介质中增强，从而解决在镜像核中观察到的Nolen-Schiffer异常。由于n-n散射参数的提取与特定核反应的理论分析密切相关，我们已经检查了在反应${ensuremath{pi}}^{ensuremath{-}}mathrm{d}ensuremath{研究中使用的一些理论处理和近似。
ightarrow}ensuremath{gamma}mathrm{nn}$，其对于此目的是理想的。特别地，我们考虑了中子-中子增强在较高的n-n分波通过引入一个简化的方法，本征振幅和多极展开。本文还介绍了计算$^{1}S_{0}$ n-n态末态相互作用以确定低能n-n散射参数的方法。
Analyses of bound systems and low-energy scattering experiments give clear evidence of a departure from charge symmetry in the nuclear interaction. Furthermore, this effect could be enhanced in a nuclear medium thereby solving the Nolen-Schiffer anomaly observed in mirror nuclei. Since the extraction of the n-n scattering parameters is tied to the theoretical analysis of particular nuclear reactions, we have examined some theoretical treatments and approximations used in the study of the reaction ${ensuremath{pi}}^{ensuremath{-}}mathrm{d}ensuremath{
ightarrow}ensuremath{gamma}mathrm{nn}$ which is ideal for this purpose. In particular, we consider the neutron-neutron enhancement in higher n-n partial waves by introducing a simplified approach to the eigenamplitude and multipole expansions. We also give a description of the methods used in the calculation of the final state interactions in the $^{1}S_{0}$ n-n state to determine the low-energy n-n scattering parameters.