Studying shapes of event using effective field theory
Speaker: Daekyoung Kang, Fudan University
Abstract: One of classic ways of studying QCD events in high-energy collisions is to measure event shape variables that are observables designed to characterize geometric feature of the event. By using effective field theory, some of event shapes was predicted to very high accuracy and the strong coupling constant was determined at 1% accuracy. However, the value of coupling constant tends to be lower than other results. The discrepancy has not been resolved for a decay and this challenges our understanding of QCD using effective field theory. I will discuss current status of the discrepancy, review the effective field theory method, and report our progress on event shapes for future electron-ion collider which offers new opportunity to make an independent test and may shed lights on the discrepancy.
Time: 2:30 pm Thursday, Dec 16, 2021
Location: 江湾物理楼 C108
Zoom meeting ID: 827 813 4995 Passcode: fudanHEP
Host: Dingyu Shao