Angular Distribution of Production Planes in J/ψ→■ Decay  

作　　者：Qiaorong Shen Xinyan Tong Yunfei Long Yajun Mao 沈巧蓉;童心言;龙云飞;冒亚军(School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University)

机构地区：[1]School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University

出　　处：《Chinese Physics Letters》2019年第6期21-23,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11661141008

摘　　要：A new observable, the angle between ■ decay planes, is proposed to test the theoretical predictions on the spin correlation. With 10 billion J/ψ events collected with the BES Ⅲ detector at the BEPCⅡ e^+e^- collider, the distribution of the angle could be measured to verify whether or not a correlation exists.A new observable, the angle between ■ decay planes, is proposed to test the theoretical predictions on the spin correlation. With 10 billion J/ψ events collected with the BES Ⅲ detector at the BEPCⅡ e^+e^- collider, the distribution of the angle could be measured to verify whether or not a correlation exists.

关 键 词：J/Ψ BEPCⅡ SPIN BES 

分 类 号：O571.3[理学—粒子物理与原子核物理]