论文标题
倾斜地仔细检查隐藏的史密斯级模型
Obliquely Scrutinizing a Hidden SM-like Gauge Model
论文作者
论文摘要
鉴于CDF II探测器的标准模型$ W $ BOSON质量的最新高精度测量值，我们计算了对斜参数$ s $，$ t $和$ u $的贡献，来自两个附加的Higgs Doublets（一个惰性和一个隐藏），以及一个隐藏的中性镀金垫子和额外的fermions和Guaug guaug guaug guaug guaug guaug guaug guaug guaug guaug。 While the effects from the hidden Higgs doublet and new heavy fermions are found to be minuscule, the hidden gauge sector $SU(2)_H \times U(1)_X$ with gauge coupling strength $\gtrsim 10^{-2}$ and gauge boson mass $\gtrsim 100$ GeV can readily explain the $W$ boson mass anomaly but nevertheless excluded by Dilepton高质量共振在大型强子对撞机上进行的搜索。另一方面，由于新的$ w $ boson质量测量，新的全球符合倾斜参数，可以对G2HDM中惰性Higgs Doublet的质量分裂和混合角产生明显的影响。我们还研究了125 GEV Higgs Boson $ h \toγγ$的双hot子模式信号强度的影响，以及在高光度大的HADRON碰撞器上观察过程$ H \ toZγ$的可检测性。在这项研究中，还考虑了暗物质$ w^\ prime $的当前限制$ w^\ prime $，包括暗物质遗物密度，暗物质直接检测和无形的希格斯衰减。
In view of the recent high precision measurement of the Standard Model $W$ boson mass at the CDF II detector, we compute the contributions to the oblique parameters $S$, $T$ and $U$ coming from the two additional Higgs doublets (one inert and one hidden) as well as the hidden neutral dark gauge bosons and extra heavy fermions in the gauged two-Higgs-doublet model (G2HDM). While the effects from the hidden Higgs doublet and new heavy fermions are found to be minuscule, the hidden gauge sector $SU(2)_H \times U(1)_X$ with gauge coupling strength $\gtrsim 10^{-2}$ and gauge boson mass $\gtrsim 100$ GeV can readily explain the $W$ boson mass anomaly but nevertheless excluded by the dilepton high-mass resonance searches at the Large Hadron Collider. On the other hand, the new global fits to the oblique parameters due to the new $W$ boson mass measurement can give discernible impacts on the mass splitting and mixing angle for the inert Higgs doublet in G2HDM. We also study the impact to the signal strength of diphoton mode of the 125 GeV Higgs boson $h \to γγ$ and the detectability of the yet to observe process $h \to Z γ$ at the High Luminosity Large Hadron Collider. Current constraints for the dark matter candidate $W^\prime$ including the dark matter relic density, dark matter direct detections and invisible Higgs decays are also taken into account in this study.
