论文标题
$ h \rightarrowττ$ proton $ - $ proton Collisions在$ \ sqrt {s} $ = 13 tev的$ h \rightArrowττ$ cannel in Proton $ proton $ proton collisions in vector-boson Fusion生产的CP不变性测试
Test of CP invariance in vector-boson fusion production of the Higgs boson in the $H\rightarrowττ$ channel in proton$-$proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
论文作者
论文摘要
在$ H \rightarrowτ$衰减通道中，对Higgs Boson生产中CP不变性的测试进行了测试。该测试使用最佳观察方法，并使用36.1 $ \ mathrm {fb}^{ - 1} $ $ \ sqrt {s} $ = 13 tev proton $ - $ - $ proton $ - proton碰撞数据由LHC的Atlas实验收集。 Higgs玻色子与Electroweak仪表玻色子之间CP侵略性相互作用的贡献用有效的田间理论描述，其中参数$ \ tilde {d} $控制着CP违规的强度。在最佳观察值的分布中，没有观察到CP违规的迹象，与68％置信度（Cl）的间隔$ [-0.090，0.035] $约束，与预期的间隔相比，与$ \ tilde {d d} \ In [-0.035,035,03333333333]相比，在68％的置信度（Cl）下受到约束。在95％Cl的$ \ tilde {d} $上没有任何约束，而预期的标准模型假设的预期95％Cl间隔为$ \ tilde {d} \ in [-0.21,0.15] $。
A test of CP invariance in Higgs boson production via vector-boson fusion is performed in the $H\rightarrowττ$ decay channel. This test uses the Optimal Observable method and is carried out using 36.1 $\mathrm{fb}^{-1}$ of $\sqrt{s}$ = 13 TeV proton$-$proton collision data collected by the ATLAS experiment at the LHC. Contributions from CP-violating interactions between the Higgs boson and electroweak gauge bosons are described by an effective field theory, in which the parameter $\tilde{d}$ governs the strength of CP violation. No sign of CP violation is observed in the distributions of the Optimal Observable, and $\tilde{d}$ is constrained to the interval $[-0.090, 0.035]$ at the 68% confidence level (CL), compared to an expected interval of $\tilde{d} \in [-0.035,0.033]$ based upon the Standard Model prediction. No constraints can be set on $\tilde{d}$ at 95% CL, while an expected 95% CL interval of $\tilde{d} \in [-0.21,0.15]$ for the Standard Model hypothesis was expected.
