论文标题
低能锥形核子相互作用的基本性质
The Fundamental Nature of Low-Energy Pion-Nucleon Interactions
论文作者
论文摘要
提出了对低能量的Pion-Nucleon相互作用的历史综述，其目的是采用介绍性的教学方法，重点介绍了当前研究的问题。这些主题包括使用手性有效野外理论，Sigma术语，对低能量相距的定性理解，$δ$共振的物理学以及违反同音的物理。一个主题是通过有效的田间理论，低能脉冲核子散射与QCD直接相关。另一个主题是，现代需求有关尿布核子sigma术语和对isospin违规的研究需要更好的低能数据集。
A historical review of pion-nucleon interactions at low energy is presented, with aims toward an introductory, pedagogic approach focusing on issues germane to current research. These topics include the use of chiral effective field theory, the sigma term, qualitative understanding of low-energy phase shifts, the physics of the $Δ$ resonance, and isospin violation. A theme is that low-energy pion-nucleon scattering is directly related to QCD via effective field theory. Another theme is that modern needs regarding the pion-nucleon sigma term and the study of isospin violation requires a better low-energy data set.
