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Nucleons (protons and neutrons) are the building blocks of atomic nuclei, and are responsible for more than 99% of the visible matter in the universe. Despite decades of efforts in studying its internal structure, there are still a number of puzzles surrounding the proton such as its spin, and charge radius. Accurate knowledge about the proton charge radius is not only essential for understanding how QCD works in the non-perturbative region, but also important for bound state QED calculations of atomic energy levels.
In this seminar, I will review the latest situation concerning the proton charge radius in light of the new experimental results from both atomic hydrogen spectroscopy and electron scattering measurements. I will also present the related theoretical developments and backgrounds concerning the determination of the proton charge radius using different experimental techniques, and provide an outlook to upcoming experiments.
Webinar at https://us02web.zoom.us/j/81572103194?pwd=eE1QVWZFc1hWbWszZ2N0RW1iWHFBZz09