平地方案中的标度生成和费米子暗物质
Scalegenesis and fermionic dark matters in the flatland scenario
摘要：
我们提出了一个扩展的标准模型与马约拉纳型费米子暗物质的基础上平坦的情况下，所有的标量耦合常数，包括标量质量项，消失在普朗克尺度，即标量势是平坦的普朗克尺度以上。这种情况可以与量子引力的渐近安全范式相兼容。我们搜索参数空间，使模型再现的观测值，如希格斯质量，电弱真空和遗迹丰度的暗物质。我们还研究了Majorana费米子和核子的自旋无关弹性截面。结果表明，作为暗物质候选者的Majorana费米子可以通过XENON、LUX和PandaX-Ⅱ等暗物质直接探测实验进行验证。我们证明了在普朗克尺度或渐近安全的量子引力下，在与平地情景兼容的最小设置内，扩展模型可以具有很强的可预测性。
英文摘要：
We propose an extension of the standard model with Majorana-type fermionic dark matters based on the flatland scenario where all scalar coupling constants, including scalar mass terms, vanish at the Planck scale, i.e. the scalar potential is flat above the Planck scale. This scenario could be compatible with the asymptotic safety paradigm for quantum gravity. We search the parameter space so that the model reproduces the observed values such as the Higgs mass, the electroweak vacuum and the relic abundance of dark matter. We also investigate the spin-independent elastic cross section for the Majorana fermions and a nucleon. It is shown that the Majorana fermions as dark matter candidates could be tested by dark matter direct detection experiments such as XENON, LUX and PandaX-II. We demonstrate that within the minimal setup compatible with the flatland scenario at the Planck scale or asymptotically safe quantum gravity, the extended model could have a strong predictability.
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