论文标题
2hdm单线门户到暗物质
2HDM singlet portal to dark matter
论文作者
论文摘要
Higgs门户模型是解释宇宙遗物丰度的最小方法。他们仅通过一个单个参数来添加一个单元，该单元仅通过一个控制暗物质遗物丰度和直接检测横截面的单个参数。不幸的是，这种情况是带有标量或费米金暗物质，几乎被后者排除在外。在本文中，我们在2HDM的背景下用费米斯暗物质分析了Higgs-Portal的想法。通过控制直接检测横截面的耦合，我们能够打开参数空间并找到与观察到的Relic密度和所有当前边界一致的较大区域的耦合。
Higgs portal models are the most minimal way to explain the relic abundance of the Universe. They add just a singlet that only couples to the Higgs through a single parameter that controls both the dark matter relic abundance and the direct detection cross-section. Unfortunately this scenario, either with scalar or fermionic dark matter, is almost ruled out by the latter. In this paper we analyze the Higgs-portal idea with fermionic dark matter in the context of a 2HDM. By disentangling the couplings responsible for the correct relic density from those that control the direct detection cross section we are able to open the parameter space and find wide regions consistent with both the observed relic density and all the current bounds.
