基于重子对理解非微扰强相互作用的重要性，以及各大科学装置正开展的或拟开展的重子研究计划，我们拟用夸克模型从夸克层次研究强子散射和衰变过程，在过程中探索轻味重子激发态的性质，寻找丢失的共振态。拟在如下方面取得创新成果：(1) 首次在夸克层面研究γp→ KΛ (1405,1520), KΣ(1385)过程，发展新的分波分析方法，在过程中寻找质量约2.0 GeV的新重子激发态；(2) 首次在夸克层面研究πp→nγ和Kp→Λγ/Σγ，在过程中理解重子共振态，特别是N(1440)和Λ(1405)，的电磁和强衰变性质，为澄清一些长期的疑惑提供线索；(3) 在夸克模型框架下系统完成7个KN散射过程Kp→Kp/Σπ/Λπ/Kn/ηΛ的联合分析，提取Λ和Σ超子共振态的信息，发展和完善超子谱；(4) 在夸克模型框架下研究Ξ和Ω激发态的强衰变和辐射衰变,据此提出观测策略, 为实验寻找丢失共振态提供参考。

Based on the importance of baryons to the understanding of the non-perturbative strong interactions, and the experimental programs of baryons are being or to be carried out at many large scientific facilities, we will study some scattering and decay processes related to these experiments with a constituent quark model (CQM). From these processes we will extract the properties of baryon resonances and look for the missing resonances. Specifically, we expect to obtain the following innovative results: (1) The CQM will be first extended to study the γp→KΛ(1405, 1520), KΣ(1385) processes. To deal with these reactions, we will develop new partial wave analysis (PWA) methods. In these reactions, we will looking for new nucleon resonances with a mass around 2.0 GeV. (2) The CQM will be first extended to study the πp→nγ and Kp→Λγ/Σγ processes. After a PWA being carried out, from these processes we can understand the properties of strong and electromagnetic decays of baryon resonances, especially for N(1440) and Λ(1405), and clarify some puzzles about them. (3) With the CQM we will carry out a combined study of the seven KN reactions Kp→Kp/Σπ/Λπ/Kn/ηΛ, where we will extract information of Λ and Σ resonances, and finally establish a more abundant spectrum. (4) With the CQM, we will study the strong/electromagnetic decays of baryons, and further discuss the observations of the missing states by using these decays. We hope our study can provide some useful references to observe the missing states in forthcoming experiments.