π +散射的现象学局部势分析

S. Khallaf, A. A. Ebrahim
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引用次数: 3

摘要

通过求解由Klein-Gordon方程简化而成的薛定谔方程,计算了π+核散射截面。假设π+在12C、40Ca和208Pb中散射时的局域势,并对其进行了能量依赖的现象势参数搜索,得到了800 MeV/c介子实验室动量下π+散射的微分弹性截面、非弹性截面、总截面和反应截面。集体模型用于计算导致12C最低2+和3 -态的介子微分非弹性截面的角分布。提取变形参数和长度,并与其他工程的变形参数和长度进行比较。局域势很好地描述了核子中介子的散射。
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Phenomenological local potential analysis of π + scattering
π+-nucleus scattering cross section are calculated by solving a Schrodinger equation reduced from the Klein-Gordon equation. Local potentials are assumed, and phenomenological potential parameters are searched energy dependently for π+ scattering from 12C, 40Ca, and 208Pb to reproduce not only differential elastic cross sections but also inelastic and total and reaction cross sections at 800 MeV/c pion laboratory momentum. The collective model is used to calculate the angular distributions of differential inelastic cross sections for pions leading to the lowest 2+ and 3− states of 12C. The deformation parameters and lengths are extracted and compared to the corresponding ones from other works. Local potentials well describe the scattering of pions from nuclei.
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