Spin dependence of the Lambda N effective interaction.
Spin dependence of the Lambda N effective interaction.
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Lambda N 有效相互作用的自旋依赖性。
DOI：
10.1103/physrevc.31.499
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
R. Dalitz
中科院分区：
文献类型：
--
作者：
D. Millener;A. Gal;C. Dover;R. Dalitz
基于…lambda…的理论估计的组合。N势模型并对超核数据进行现象学分析，确定了一组四个p/sub N/s/sub ..lambda。/二体矩阵元素，表征自旋依赖的…p层中的N相互作用。中心的自旋和…自旋轨道矩阵元素最强烈地受到现有数据的约束。自旋依赖性很弱，因为（核）x s/下标…/ doublet分裂预计为100 keV数量级，除了/sub ..lambda..的特殊情况。//sup 7/Li，其中中心自旋-自旋相互作用占主导地位，基态重态分裂可能为600 keV数量级。详细考虑了那些……射线跃迁的观测将最好地用于进一步约束自旋依赖。N相互作用，特别是张量相互作用。
A combination of theoretical estimates, based on a ..lambda..N potential model and phenomenological analysis of hypernuclear data, is used to determine a set of four p/sub N/s/sub ..lambda../ two-body matrix elements which characterize the spin dependence of the ..lambda..N interaction in the p shell. The central spin-spin and the ..lambda.. spin-orbit matrix elements are most strongly constrained by existing data. The spin dependence is weak in the sense that (core) x s/sub ..lambda../ doublet splittings are predicted to be of order 100 keV, except for the special case of /sub ..lambda..//sup 7/Li where the central spin-spin interaction dominates and the ground state doublet splitting is likely to be of order 600 keV. Detailed consideration is given to those ..gamma.. ray transitions the observation of which would best serve to further constrain the spin dependence of the ..lambda..N interaction, particularly the tensor interaction.