Low-energy p d scattering: High precision data, comparisons with theory, and phase shift analyses
Low-energy p d scattering: High precision data, comparisons with theory, and phase shift analyses
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低能 p d 散射：高精度数据、与理论的比较以及相移分析
DOI：
10.1103/physrevc.65.034002
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M. Viviani
中科院分区：
文献类型：
--
作者：
M. H. Wood;M. H. Wood;Carl R. Brune;Carl R. Brune;B. M. Fisher;B. M. Fisher;H. Karwowski;H. Karwowski;D. S. Leonard;D. S. Leonard;E. Ludwig;E. Ludwig;A. Kievsky;S. Rosati;M. Viviani
$\ensureath{\sigma}(\ensureath{\theta})、$${A}_{y}、$${mathm{it}}_{11}、$${T}_{20}、$${T}_{21}、这组高精度的数据与只考虑核子-核子势的变分计算，以及与包括三核子$(3N)$势的计算进行了比较。当使用$3N$势时，与横截面和张量分析功率数据的一致性很好。然而，矢量分析能力之间的比较显示，角分布的最大值的差异约为40%，这比在较高能量下对$p-d$和$n-d$的散射都要大。在$3N$势中包含唯象自旋-轨道力，大大改进了与矢量分析能力的比较。对该数据集和${E}_{\mathrm{c}.\mathrm{m}.}=431.3\mathrm{keV}.$的类似数据集进行了单能相移分析，讨论了不同相移参数在拟合这些数据中的作用。
Angular distributions of $\ensuremath{\sigma}(\ensuremath{\theta}),$ ${A}_{y},$ ${\mathrm{iT}}_{11},$ ${T}_{20},$ ${T}_{21},$ and ${T}_{22}$ have been measured for $d\ensuremath{-}p$ scattering at ${E}_{\mathrm{c}.\mathrm{m}.}=667\mathrm{keV}.$ This set of high-precision data is compared to variational calculations with the nucleon-nucleon potential alone and also to calculations including a three-nucleon $(3N)$ potential. Agreement with cross section and tensor analyzing power data is excellent when a $3N$ potential is used. However, a comparison between the vector analyzing powers reveals differences of approximately 40% in the maxima of the angular distributions which is larger than reported at higher energies for both $p\ensuremath{-}d$ and $n\ensuremath{-}d$ scattering. The inclusion of phenomenological spin-orbit forces in a $3N$ potential improves the comparison with vector analyzing powers substantially. Single-energy phase-shift analyses were performed on this data set and a similar data set at ${E}_{\mathrm{c}.\mathrm{m}.}=431.3\mathrm{keV}.$ The role of the different phase-shift parameters in fitting these data is discussed.