核子-核子碰撞过程中共振态的研究

The nucleon-nucleon collisions are good place for studying the nucleon resonances and di-baryon resonances and deepening our knowledge of their internal structure. This proposal is planned to combine the recent theoretical and experimental progress and make full use of the effective model to explore the role of nucleon resonances and di-baryon resonances in the empirical data of nucleon-nucleon collisions. To this end, we arrange to include various interference terms and improve the wave function of the initial and final nucleons. As a result, the free and bound nucleons will be handled in a consistent framework and the final state interaction will be properly treated. We will pay special attention to the controversial channels, e.g. double pion and strangeness production. This project will not only search for missing nucleon resonances and di-baryon resonances, but also improve our knowledge of nucleon-nucleon interaction in the intermediate and low energy range and advance our understanding of the strong interaction in the non-perturbative region.

核子-核子碰撞过程可以用来研究核子共振态和双重子共振态，增进我们对它们内部结构的了解。本项目将结合近年来的实验和理论进展，利用有效模型对其进行深入研究，在现有的实验数据中确认其中核子共振态和双重子共振态的贡献。为此，我们将包含各种干涉效应，改进模型中初态和末态的核子波函数，使其能在统一的理论框架下处理自由和束缚的核子，包含末态相互作用的影响。我们将重点研究其中一些存在争议的反应道，例如双pion产生过程和奇异数产生过程。我们的研究不但能寻找未知的核子共振态和双重子共振态，而且能增强我们对中低能区核子-核子相互作用的了解，并最终增进对非微扰区强相互作用的理解。