题目：A model about oscillation of Electromagnetic form factors of nucleons

报告人：戴凌云教授（湖南大学）

时间：2023年3月17日上午（星期五）10:00

地点：理工楼1226

联系人：刘占伟

报告摘要：

In this talk, we will discuss a recent study on the electromagnetic form factor of nucleons from our group. The chiral effective field theory is powerful in calculating the low energy interactions between nucleon and antinucleon. We apply it to describe the scattering amplitudes near the threshold by solving the Lippmann-Schwinger equation. These scattering amplitudes could be input as the kernel to study the nucleon antinucleon FSI. With it, we propose a model to describe the oscillation of the EMFFs of nucleons in the time-like region. The physical meaning of our fractional oscillators will be discussed: they are induced by the hard photons, corresponding to the distribution of the polarized charges taken by quarks. Our model can also explain the phase difference between the EMFFs of the proton and neutron.

个人简介：

戴凌云，湖南大学物理与电子科学学院教授，博士生导师。2007年本科毕业于兰州大学，2012年博士毕业于北京大学，先后在西班牙瓦伦西亚大学，美国杰弗森国家实验室、印第安纳大学伯明顿校区和德国尤利希研究所等地联合培养或做博士后。2018年起在湖南大学工作。主要关注粒子物理理论，研究方向包括振幅分析、手征有效场理论、S-矩阵理论、缪子反常磁矩g-2等。详情见https://inspirehep.net/authors/1273310。