New observable for measuring the CP property of top-Higgs interaction  

作　　者：Qing-Hong Cao Ke-Pan Xie Hao Zhang Rui Zhang 曹庆宏;谢柯盼;张昊;张睿(Department of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China;Collaborative Innovation Center of Quantum Matter,Beijing 100871,China;Center for High Energy Physics,Peking University,Beijing 100871,China;Center for Theoretical Physics,Department of Physics and Astronomy,Seoul National University,Seoul 08826,Korea;Theoretical Physics Division,Institute of High Energy Physics,Beijing 100049,China;School of Physics,University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]Department of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China [2]Collaborative Innovation Center of Quantum Matter,Beijing 100871,China [3]Center for High Energy Physics,Peking University,Beijing 100871,China [4]Center for Theoretical Physics,Department of Physics and Astronomy,Seoul National University,Seoul 08826,Korea [5]Theoretical Physics Division,Institute of High Energy Physics,Beijing 100049,China [6]School of Physics,University of Chinese Academy of Science,Beijing 100049,China

出　　处：《Chinese Physics C》2021年第2期319-325,共7页中国物理C（英文版）

基　　金：QHC and RZ are supported in part by the National Science Foundation of China(11725520,11675002,11635001);KPX is supported by grant(NRF-2019RICIC1010050);HZ is supported by Institute of High Energy Physics,Chinese Academy of Science(Y6515580U1);Innovation Grant(Y4545171Y2)。

摘　　要：We propose a new dihedral angle observable for measuring the CP property of the interaction between the top quark and Higgs boson int\bar{t}Hproduction at the 14 TeV Large Hadron Collider(LHC).We consider two decay modes of the Higgs boson,H→to b\b and H→γγ,and demonstrate that the dihedral angle distribution is able to distinguish between the CP-even and the CP-odd hypothesis at a 95%confidence level,with an integrated luminosity of\sim 180fb^(-1).

关 键 词：HIGGS TOP-QUARK Yukawa interaction 

分 类 号：O572.214[理学—粒子物理与原子核物理]