Study of Strangeness rhotoproduction on the Neutron in the Threshold Region
Study of Strangeness rhotoproduction on the Neutron in the Threshold Region
复制标题
中子阈值区奇异光产生的研究
DOI：
10.1007/s00601-013-0664-7
复制
发表时间：
2013
期刊：
影响因子：
1.6
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
H. Kanda;et al.
东北大学电子光子科学研究中心对氘核上中性K介子的光生进行了研究。我们研制了中性K介子谱仪-2，用于探测中性K介子和超子衰变产生的带电粒子。我们得到了一个动量分布K 0的包容性测量。这与之前的测量结果一致。由γ + d→ Λ +X的积分截面估算了γ + d→ K 0 + Λ + p的总截面。相对于光子能量的总截面与理论计算进行了比较。它支持萨克雷-里昂A模型的计算，轴向矢量介子的中性与带电耦合常数之比K1约为−1.5。总截面的能量依赖性和大小与γ + p → K+Λ的总截面相似。
Photoproduction of the neutral kaon on the deuteron has been investigated at the Research Center for Electron Photon Science, Tohoku University. We constructed the Neutral Kaon Spectrometer-2 for the detection of charged particles from the decay of the neutral kaon and the hyperon. We obtained a momentum distribution ofK0with the inclusive measurement. It was consistent with the previous measurement. The total cross section ofγ + d→K0+ Λ +pwas estimated from the measured integral cross section ofγ + d→ Λ +X. The total cross section with respect to the photon energy was compared with the theoretical calculations. It favored the Saclay-Lyon A model calculation with the ratio of the neutral to charged coupling constants of the axial-vector meson,K1, as ~ −1.5. The energy dependence and the magnitude of the total cross section were similar to the total cross section ofγ + p → K+Λ.