Seminar

Title: Where does the proton mass come from?

Speaker: Dr.YiboYang (杨一玻) (University of Kentucky)

Time: 3:00PM, Jan. 20th (Wednesday)

Place: Theoretical Physics Division，319

Abstract: The speaker will introduce the progress on the proton mass decomposition, based on Ji’s scheme and the direct lattice QCD calculation. Ji’s scheme provides a picture to decompose the proton mass into the quark mass which is directly related to the coupling to Higgs boson, the quark energy comes from the motion of the quark, and also the glue part comes from the non-trivial vacuum structure, while the phenomenology inputs are required. The lattice QCD calculation provides a systematic way to determine these inputs from the first-principles theory, and can provide a reliable proton mass decomposition without the phenomenology module dependence.