Searching for the light leptophilic gauge boson Zx via four-lepton final states at the CEPC  

作　　者：岳崇兴 李妍钰 王美舒羽 张欣蒙 Chong-Xing Yue;Yan-Yu Li;Mei-Shu-Yu Wang;Xin-Meng Zhang(Department of Physics,Liaoning Normal University,Dalian 116029,China;Center for Theoretical and Experimental High Energy Physics,Liaoning Normal University,Dalian 116029,China)

机构地区：[1]Department of Physics,Liaoning Normal University,Dalian 116029,China [2]Center for Theoretical and Experimental High Energy Physics,Liaoning Normal University,Dalian 116029,China

出　　处：《Chinese Physics C》2024年第4期59-67,共9页中国物理C（英文版）

基　　金：the National Natural Science Foundation of China(11875157,12147214)。

摘　　要：We investigate the possibility of detecting the leptophilic gauge boson Z_(x) predicted by the U(1)Le−Lμmodel via the processes e+e−→ℓ^(+)ℓ^(−)Z_(x)(Z_(x)→ℓ^(+)ℓ^(−))and e+e−→ℓ^(+)ℓ^(−)Z_(x)(Z_(x)→νℓ¯νℓ)at the Circular Electron Positron Collider(CEPC)with a center of mass energy√s=240 GeV and luminosity L=5.6ab^(−1).We provide the expected sensitivities of the CEPC to the parameter space at the 1σ,2σ,3σ,and 5σlevels.

关 键 词：light gauge boson Z_(x) U(1)L_(e)-L_(μ)model Circular Electron Positron Collider 

分 类 号：O572.214[理学—粒子物理与原子核物理]