Anomalous H→ZZ→4ℓ decay and its interference effects on gluon–gluon contribution at the LHC  

作　　者：Hua-Rong He Xia Wan You-Kai Wang 贺华荣;万霞;王由凯(School of physics and Information Technology,Shaanxi Normal University,Xi'an 710119,China)

机构地区：[1]School of physics and Information Technology,Shaanxi Normal University,Xi'an 710119,China

出　　处：《Chinese Physics C》2020年第12期9-19,共11页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11847168);the Fundamental Research Funds for the Central Universities of China(GK201803019,GK202003018,1301031995);the Natural Science Foundation of Shannxi Province,China(2019JM-431,2019JQ-739)。

摘　　要：We calculate the spinor helicity amplitudes of anomalous H→ZZ→4ℓdecay.After embedding these analytic formulas into the MCFM package,we study the interference effects between the anomalous gg→H→ZZ→4ℓprocess and the SM processes,which are indispensable in the Higgs off-shell region.Subsequently,the constraints on the anomalous couplings are estimated using LHC experimental data.

关 键 词：anomalous HVV couplings interference effect HIGGS SM effective field theory LHC 

分 类 号：O572[理学—粒子物理与原子核物理]