论文标题
来自黑暗区域的CDF W质量异常，带有Stueckelberg-Higgs Portal
CDF W mass anomaly from a dark sector with a Stueckelberg-Higgs portal
论文作者
论文摘要
我们对CDF协作最近报道的新的W质量测量值提出了一个解释，该测量值大于标准模型的预期大约7个标准偏差。 To alleviate the tensions that are imposed on the electroweak sector by the new W mass measurement, we carry out an analysis in the Stueckelberg extended standard model where a new neutral gauge boson appears which mixes with the two neutral gauge bosons in the electroweak sector both via the Stueckelberg mass terms and via the gauge invariant Stueckelberg-Higgs portal interaction and spoils the custodial在树层处的对称性，因此W玻色子质量与Z玻色子质量之间的简单关系不得。我们发现，如果新的仪表玻色子质量大于Z玻色子质量，则这种扩展会增加W玻色子质量。我们进一步表明，扩展模型中存在参数空间的很大一部分，该模型包括CDF质量异常，并且与Z POL处的各种可观测值一致，并且与Atlas dilepton限制一致。 stueckelberg $ z'_ {\ rm st} $ boson（解决CDF W质量异常）应在未来的LHC实验中进行搜索。
We propose an explanation to the new W mass measurement recently reported by the CDF collaboration, which is larger than the standard model expectation by about 7 standard deviations. To alleviate the tensions that are imposed on the electroweak sector by the new W mass measurement, we carry out an analysis in the Stueckelberg extended standard model where a new neutral gauge boson appears which mixes with the two neutral gauge bosons in the electroweak sector both via the Stueckelberg mass terms and via the gauge invariant Stueckelberg-Higgs portal interaction and spoils the custodial symmetry at the tree level so that the simple relation between the W boson mass and the Z boson mass does not hold. We find that such an extension increases the W boson mass if the new gauge boson mass is larger than the Z boson mass. We further show that there exists a significant part of the parameter space in the extended model which includes the CDF mass anomaly and is consistent with the various observables at the Z pole and consistent with the ATLAS dilepton limits. The Stueckelberg $Z'_{\rm St}$ boson, which resolves the CDF W mass anomaly, should be searchable in future LHC experiments.
