摘要
The measurement of decay parameters is one of the important goals of particle physics experiments,and the measurement serves as a probe to search for evidence of CP violation in baryonic decays.The experimental results will aid in advancing existing theoretical research and establishing new experimental objectives.In this study,we formulate the asymmetric parameters that characterize parity violation,and then derive formulas for the measurement of CP violation.The formulae for the joint angular distribution of the full decay chain as well as the polarization observable of Ξ^(0),Ξ¯^(0),Λ,and Λ¯are also provided for experiments.Lastly,we evaluated the sensitivity of two asymmetric parameters:αΞ0→Λπ0(abbreviated asαΞ0)andαΞ¯0→Λ¯γ(abbreviated asαΞ¯0)for future experimental measurements.
作者
洪鹏程
平荣刚
宋维民
李贺
周小蓉
Peng-Cheng Hong;Rong-Gang Ping;Wei-Min Song;He Li;Xiao-Rong Zhou(College of Physics,Jilin University,Changchun 130012,China;Institute of High Energy Physics,Beijing 100049,China;Department of Modern Physics,University of Science and Technology of China,Hefei,China)
基金
Supported by the National Natural Science Foundation of China(12175244,11875262,11805037,U1832121)
National Key Research and Development Program of China(2020YFA0406301)。
