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arXiv 1002.0487nucl-th
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中子-质子系统$^3S_1$ - $^3D_1$分波态的协变可分相互作用

Covariant separable interaction for the neutron-proton system in $^3S_1$-$^3D_1$ partial-wave state

S. G. Bondarenko, V. V. Burov, W. -Y. Pauchy Hwang, E. P. Rogochaya

摘要:

在协变Bethe-Salpeter方法下,构造了三重态耦合$^3S_1$ - $^3D_1$分波态的六秩可分中子-质子相互作用核.两种不同的方法被认为是一个相对论性的推广最初非相对论性形状因子参数化的内核。模型参数通过拟合弹性$^3S_1$和$^3D_1$相移和三重态散射长度以及氘波函数和氘结合能的渐近$D/S$比来确定。考虑了$D$状态概率约束4-7\%。计算了氘核的磁矩。Noyes-Kowalski函数进一步证明了半壳层性质。第一个测试所构建的内核进行计算在三个不同的运动学条件下的氘核电蜕变。

英文摘要:

Within a covariant Bethe-Salpeter approach a rank-six separable neutron-proton interaction kernel for the triplet coupled $^3S_1$-$^3D_1$ partial-wave state is constructed. Two different methods of a relativistic generalization of initially nonrelativistic form factors parametrizing the kernel are considered. The model parameters are determined by fitting the elastic $^3S_1$ and $^3D_1$ phase shifts and the triplet scattering length as well as the asymptotic $D/S$ ratio of the deuteron wave functions and the deuteron binding energy. The $D$-state probability constraints 4-7\% are taken into account. The deuteron magnetic moment is calculated. The half-off-shell properties are further demonstrated by the Noyes-Kowalski functions. The first test of the constructed kernel is performed by calculating the deuteron electrodisintegration at three different kinematic conditions.

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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