The fact that there is far more matter than antimatter in the universe has long puzzled the scientific community, a phenomenon known as the “mystery of the origin of matter.” The mechanism of charge-parity (CP) violation in particle physics is considered a crucial key to solving this cosmic mystery. As a result, scientists have been actively searching for new manifestations of CP violation through various experimental approaches to better understand its underlying mechanisms. Recently, Chair Professor Xiao-Gang He of the Tsung-Dao Lee Institute at Shanghai Jiao Tong University and Assistant Professor Chia-Wei Liu of the Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, have achieved a significant advance in this field. Their research was published in Science Bulletin. 

For the first time, the team systematically predicted the possibility of sizable CP violation in the decays of heavy baryons containing a charm quark by innovatively combining SU(3) light-quark symmetry with hadronic final-state rescattering mechanisms. They discovered that strong interference effects between different topological diagrams in charmed baryon decays can lead to a substantial enhancement of CP violation—over an order of magnitude greater than previously expected within the Standard Model framework. In particular, the predicted CP violation in the decay mode 

can reach the level of one per mille, providing a new opportunity to test the Standard Model of particle physics and search for new sources of CP violation.