Title: Super Z factory and its experimental physics
Location: Room 437, Xingjian Building
Host: School of Physics Science & Technology
Dr. Chao-Hsi Chang, a famous particle physicist, a member of the Chinese Academy of Sciences, and a researcher at the Institute of Theoretical Physics of the Chinese Academy of Sciences. Mainly engaged in particle physics theory research, known as Bc meson research in the world. A research paper on the strong generation of J/psi particles based on perturbative quantum chromodynamics has originally proposed a 'color singlet mechanism' that directly produces J/psi particles, which is often cited as a representative paper for this mechanism. Theoretically, the fragmentation function of b quark to Bc meson is calculated correctly, and the transverse momentum distribution and total cross section of the ground state and excited state of Bc meson are strongly generated. The width of the main decay channel of Bc meson and the lifetime of Bc meson are calculated. Predicted the way and possibility of experimenting with Bc mesons. In 1998, the experiment of TEVATRON in the United States took the lead in discovering the Bc meson as predicted by theory. The theoretically produced sub-BCVEGPY and GENXICC, which were written and upgraded in time to produce "double-flavored" particles, have been very useful for experimental research and have been used by several experimental groups. Focusing on the experiments of combining medium and high energy physics in China, we carried out relevant theoretical research and put forward valuable suggestions for our experiments. He has won the first prize of the Natural Science of the Chinese Academy of Sciences and the Youxun Wu Physics Prize of the Chinese Physical Society.
In this report, Dr. Chao-Hsi Chang introduced the structure of the Z factory and the Super Z factory, and the physical tests that can be carried out on the device. Finally, some interesting physical prospects were introduced. At the end of the report, Dr. Chao-Hsi Chang put forward pertinent suggestions for the experimental development of the School of Physics Science & Technology. He believed that the School of Physics Science & Technology should actively carry out cooperation with the platform of large scientific installations, and hoped to seek multidisciplinary research cooperation through this exchange.