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本文用塔姆-唐可夫近似解K+介子和核子的弹性散射问题,得到了K介子实验室动能400Mev以下的相移截面和能量的关系,并和实验及前人的理论结果作了比较。计算中较严格考虑了核子反冲效应,指出了在考虑了反冲效应后能使理论曲线在高能端更与实验曲线接近。同时就Λ-K和∑-K的各种可能的宇称情况进行了分析,排斥了相对宇称皆正的可能,并指出Λ-K和∑-K的相对宇称选取不同的符号和二者皆取负号一样,能符合K+-p散射实验,但在分析K+-n散射时仍遇到困难。By using the Tamm-Dancoff approximation, the K+-N elastic scattering problems are solved. We have calculated phase shifts and cross section at five energies below 400 Mev. The numerical results are compared with experiments and previous works. In calculation, the nucleon recoil effects are considered, which may give better energy dependence of K+-p scattering above 250-300 Mev. The different possibilities of K-Y relative parities have also been considered. Our results favour odd parity but the opposite parities of ∧ and ∑ particles also fit the K+-p scattering data. However, the two cases are not in agreement with the experiment in analyzing the K+-n scattering.
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