论文标题
两个组件单线 - 三重痕迹标量暗物质和electroweak真空稳定性
Two Component Singlet-Triplet Scalar Dark Matter and Electroweak Vacuum Stability
论文作者
论文摘要
我们通过用单元和无费用的三重态标量扩展标准模型来提出两个组件暗物质设置，在不同的$ z_2 $ symmetries下，每个模型都奇怪。我们观察到，两个暗物质组件之间的相互作用允许一个可行的参数空间，即使两种暗物质候选者的质量都可以在TEV以下，即使它们对单个组件暗物质的个人贡献排除了任何此类sub-Tev暗物质。我们发现，与标量ONE相比，标量三重态的中性成分较轻，扮演着一个暗物质成分的作用。此外，由于Higgs Portal耦合与标量暗物质组件，该设置被证明可以使Electroweak真空绝对稳定，直到Planck量表。
We propose a two component dark matter set-up by extending the Standard Model with a singlet and a hypercharge-less triplet scalars, each of them being odd under different $Z_2$ symmetries. We observe that the inter-conversion between the two dark matter components allow a viable parameter space where masses of both the dark matter candidates can be below TeV, even though their individual contribution to single component dark matter rules out any such sub-TeV dark matter. We find that a lighter mass of the neutral component of the scalar triplet, playing the role of one dark matter component, compared to the scalar one is favored. In addition, the set-up is shown to make the electroweak vacuum absolutely stable till the Planck scale, thanks to Higgs portal coupling with the scalar dark matter components.
