标题： 通过eta产生探索组成夸克之间的超精细相互作用 显示英文标题

标题： Exploration of hyperfine interaction between constituent quarks via eta productions

摘要： 在本工作中，研究了组成夸克模型中不同的交换自由度，即一个胶子、一个介子或戈德斯通玻色子，这些自由度负责组成夸克之间的超精细相互作用，通过η产生过程的综合分析，$\pi^{-}p\rightarrow\eta n$和$\gamma p\rightarrow\eta p$。 通过戈德斯通玻色子交换，以及一个胶子或一个介子交换，谱和可观测量，如微分截面和极化束不对称性，都被拟合到粒子数据组建议的数值和实验数据。 前两种交换自由度对谱和可观测量给出了可接受的描述，而一个介子交换不能同时描述可观测量和谱，因此可以被排除。 这里考虑的两个过程的实验数据强烈支持两个最低S11态和D13态的混合角分别约为-30度和6度。 显示英文摘要

摘要： In this work, the different exchange freedom, one gluon, one pion or Goldstone boson, in constituent quark model is investigated, which is responsible to the hyperfine interaction between constituent quarks, via the combined analysis of the eta production processes, $\pi^{-}p\rightarrow\eta n$ and $\gamma p\rightarrow\eta p$. With the Goldstone-boson exchange, as well as the one-gluon or one-pion exchange, both the spectrum and observables, such as, the differential cross section and polarized beam asymmetry, are fitted to the suggested values of Particle Data Group and the experimental data. The first two types of exchange freedoms give acceptable description of the spectrum and observables while the one pion exchange can not describe the observables and spectrum simultaneously, so can be excluded. The experimental data for the two processes considered here strongly support the mixing angles for two lowest S11 sates and D13 states as about -30 and 6 degree respectively.