In the last 50 years, the development of the Quantum Chromodynamics (QCD) theory and many high energy scattering experiments have confirmed that nuclei are made of protons and neutrons which are further composed of quarks bound by gluons via the strong interaction force. Many progresses have been made in term of understanding the one-dimensional structure of nucleons, yet many unknowns, such as the proton’s radius, mass and spin puzzles, are still waiting for being further investigated. New efforts in both theories and experiments have just started since the late 1990s to understand the dynamic multi-dimensional structure of nucleons and how they connect to unsolved problems. High energy and large intensity accelerator facilities, such as the Thomas Jefferson Lab and the future Electron-Ion Colliders, allows us to start exploring these issues by using advanced detector systems to measure multiple particle scattering processes. In this talk, I will quickly introduce the current understanding of the nucleon structure and will mainly focus on introducing the existing experimental efforts on the SoLID project at Jefferson Lab and opportunities at future Electron-Ion Colliders in both US and China.

 

个人简介：叶志鸿，兰州大学物理学学士，美国弗吉尼亚大学实验核物理博士，美国杜克大学和阿贡国家实验室博士后。他长期在美国杰佛逊实验室和费米实验室从事实验核物理研究。主要研究方向涉及：核子（质子和中子）的多体作用及如何构成稳定原子核；夸克和胶子的强相互作用，构成稳定核子的动态机制以及如何参与形成稳定原子核；核子半径，自旋和质量之谜；探索标准模型之外的新物理。他参与几十个大型核物理实验并且是多个实验的代言人，在顶级国际杂志比如PRL和PLB发表了30余篇文章，与实验和理论物理学家合作共同探索新的研究方向，积极参与设计研发下一代实验装备并在研发设计SoLID中扮演主要角色。