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arXiv 1306.4710hep-phastro-ph.CO
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标量单线态暗物质的最新进展

Update on scalar singlet dark matter

James M. Cline, Kimmo Kainulainen, Pat Scott, Christoph Weniger

摘要:

暗物质的最简单模型之一是标量单态场S包括部分或全部暗物质,并通过HHSS耦合到希格斯玻色子与标准模型相互作用。我们更新了目前的限制模型从大型强子对撞机搜索看不见的希格斯衰变,热遗迹密度的S,和暗物质搜索通过间接和直接检测。我们指出,目前允许的参数空间的边缘显着减少与下一代的实验。我们讨论了这种约束的影响,可能的应用程序的标量单暗物质,包括一个强大的电弱相变,并在高尺度的希格斯势的真空稳定性的问题。

英文摘要:

One of the simplest models of dark matter is that where a scalar singlet field S comprises some or all of the dark matter, and interacts with the standard model through an HHSS coupling to the Higgs boson. We update the present limits on the model from LHC searches for invisible Higgs decays, the thermal relic density of S, and dark matter searches via indirect and direct detection. We point out that the currently allowed parameter space is on the verge of being significantly reduced with the next generation of experiments. We discuss the impact of such constraints on possible applications of scalar singlet dark matter, including a strong electroweak phase transition, and the question of vacuum stability of the Higgs potential at high scales.

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