论文标题
$ hzz $异常耦合的研究。
Study of $HZZ$ anomalous couplings by angular differential cross sections
论文作者
论文摘要
作为精确度量Higgs属性的黄金频道之一，该过程$ gg \ to H \ to H \ to zz \ rightArrow 4L $提供了一个机会，为检测异常的$ HZZ $耦合在搜索标准模型以外的新物理学时都可以检测到异常的$ hzz $耦合。在本文中，我们采用纺纱螺旋幅度振幅的方法来计算$ gg \ h \ h \ h \ to zz \ rightarrow2e2μ$的幅度，在有效的尺寸-6运算符的框架内。通过使用软件包MCFM模拟CP-E-E-E-E-E-E-E-E-EV-e-even和CP-ODD异常$ HVV $耦合及其干扰。提取CP违反$ HZZ $耦合系数的最敏感的角度$ ϕ $，该系数被定义为希格斯休息框架中两个$ z $衰减平面之间的角度，用于实验测量。
Being one of the golden channels for precise measurement of Higgs properties, the process $gg \to H\to ZZ \rightarrow 4l$ provides an opportunity to detect the anomalous $HZZ$ couplings in searching of new physics beyond the Standard Model. In this paper, we adopt the method of spinor helicity amplitudes to calculate the amplitudes of process $gg \to H \to ZZ \rightarrow 2e2μ$ at the LHC in the frame of the effective dimension-6 operators. Signal processes of CP-even and CP-odd anomalous $HVV$ couplings in Higgs on/off-shell region and their interference are simulated by using the package MCFM. The most sensitive angle $ϕ$ to extract the CP violated $HZZ$ coupling coefficients, which is defined as the angle between two $Z$ decay planes in Higgs rest frame, is found for experimental measurements.
