Asymmetric matter from a dark first-order phase transition
Asymmetric matter from a dark first-order phase transition
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DOI：
10.1103/physrevd.107.055011
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发表时间：
2019-11
影响因子：
5
通讯作者：
Eleanor Hall;T. Konstandin;R. McGehee;H. Murayama
中科院分区：
文献类型：
--
作者：
Eleanor Hall;T. Konstandin;R. McGehee;H. Murayama
我们引入了一个物质起源模型，其中重子和暗物质的不对称性都起源于一个具有SU（3）\times SU（2）\times U（1）$规范群和最小物质含量的暗扇区中的一阶相变。在最简单的情况下，我们预测暗物质是一个暗中子，质量为$m_n = 1.33$ GeV或$m_n = 1.58$ GeV。或者，暗物质可能由相同数量的暗质子和π介子组成。无论在哪种情况下，这个模型都可以通过暗物质直接探测和暗光子搜索实验来验证。强的暗物质自相互作用可能会改善小尺度结构问题，而强的一级相变可能会在未来的引力波观测中得到证实。
We introduce a model for matters-genesis in which both the baryonic and dark matter asymmetries originate from a first-order phase transition in a dark sector with an $SU(3) \times SU(2) \times U(1)$ gauge group and minimal matter content. In the simplest scenario, we predict that dark matter is a dark neutron with mass either $m_n = 1.33$ GeV or $m_n = 1.58$ GeV. Alternatively, dark matter may be comprised of equal numbers of dark protons and pions. This model, in either scenario, is highly discoverable through both dark matter direct detection and dark photon search experiments. The strong dark matter self interactions may ameliorate small-scale structure problems, while the strongly first-order phase transition may be confirmed at future gravitational wave observatories.