Angular distribution coefficients of Z(W) boson produced in e^+e^- collisions at s^(1/2) = 240 GeV

作     者：Yu-Dong Wang Jian-Xiong Wang 王玉东;王建雄

作者机构：Institute of High Energy Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2019年第43卷第4期

页      面：54-62页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Supported by National Natural Science Foundation of China(11475183) the Key Research Program of Frontier Sciences,CAS,(Y7292610K1) 

主　　题：Drell-Yan process Z boson CEPC angular distribution coefficients 

摘      要：At the designed circular electron-positron collider(CEPC), similar to the hadron collider, the angular distribution coefficients of the decay lepton pair from the produced Z(W) boson in e^+e^- collisions are predicted. Their dependence on cosθZ(cosθW) are presented in four different polarization frames. Furthermore, the value of the angular distribution coefficients in different bins of cosθZ are presented in the C-S frame. In comparison with the case at the hadron collider, better accurate measurement for Z(W) is expected because there is less background, and W could be reconstructed from its leptonic decay channel. This works provides a method to precisely test the electroweak production mechanism or some effect induced from new physics in the future measurements at the CEPC.