论文标题
Higgs Boson的$ CP $属性与Atlas检测器的VBF $ H \TOγγ$通道中的Electroweak Boson耦合
Study of the $CP$ property of the Higgs boson to electroweak boson coupling in the VBF $H\toγγ$ channel with the ATLAS detector
论文作者
论文摘要
在$ h \rightarrowγ$通道中，使用139 fb $^{ - 1} $在$ \ \ sqrt {s} = 13 \，\ mathrm {tev tev the at thect the at thect the At at at thectect的$ h \ \rightArrowγ$通道中，使用139 fb $^{ - 1} $在$ \ sqrt {s}} = 13 \，\ mathrm {tev the thect the at aint at thect the at at thectect，对$ h \rightarrowγ$通道进行了$ cp $不变性的测试。如有效的田间理论所述，最佳可观察方法用于探测希格斯玻色子和伊莱维克斯仪表玻色子之间相互作用的$ cp $结构。在数据中没有观察到$ cp $违规的迹象。在两个有效的现场理论基础中，在Higgs Boson和Electroweak仪表之间的耦合中描述了$ CP $ -ODD组件的强度的参数：$ \ tilde {d} $在HISZ基础上和$ C_ {h \ tilde {h \ tilde {提出的结果是希格斯和弱玻色子之间的耦合中违反$ cp $的最严格限制。 $ \ tilde {d} $上的95％Cl约束是第一次得出，与先前的测量相比，对$ C_ {H \ Tilde {W}} $的95％Cl约束已提高了5倍。
A test of $CP$ invariance in Higgs boson production via vector-boson fusion has been performed in the $H\rightarrowγγ$ channel using 139 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13\,\mathrm{TeV}$ collected by the ATLAS detector at the LHC. The Optimal Observable method is used to probe the $CP$ structure of interactions between the Higgs boson and electroweak gauge bosons, as described by an effective field theory. No sign of $CP$ violation is observed in data. Constraints are set on the parameters describing the strength of the $CP$-odd component in the coupling between the Higgs boson and the electroweak gauge bosons in two effective field theory bases: $\tilde{d}$ in the HISZ basis and $c_{H\tilde{W}}$ in the Warsaw basis. The results presented are the most stringent constraints on $CP$ violation in the coupling between Higgs and weak bosons. The 95% CL constraint on $\tilde{d}$ is derived for the first time and the 95% CL constraint on $c_{H\tilde{W}}$ has been improved by a factor of 5 compared to the previous measurement.
