论文标题
希格斯门户网站对重力介导的超沉重暗物质的产生的影响
Impact of Higgs portal on gravity-mediated production of superheavy dark matter
论文作者
论文摘要
在所谓的普朗克相互作用的暗物质（PIDM）场景中，通过冻结机制通过重力介导的相互作用而产生超重量的暗物质颗粒。在最小的PIDM模型中，假定没有与标准模型颗粒的任何其他直接耦合。但是，对于标量暗物质颗粒，没有对称抑制Higgs门户耦合的对称性。因此，在本文中，我们研究了与Higgs场对标量暗物质的PIDM范式的非零相互作用的影响。特别是，我们充分探索模型参数空间，以确定实现正确的暗物质丰度的允许区域。此外，我们提供了HIGGS门户网站耦合的阈值，在该耦合下，相应的生产过程是亚优势，并且保留了最小的PIDM场景。对于$ 10^{15} $ GEV的基准标量暗物质质量，我们发现Higgs门户网站耦合必须小于$ 5.1 \ times 10^{ - 8} $（$ 1.1 \ times 10^{ - 7} $）才能进行瞬时（非固定性）重新进行。
In the so-called Planckian Interacting Dark Matter (PIDM) scenario, superheavy dark matter particles are produced after inflation by gravity-mediated interactions through the freeze-in mechanism. In the minimal PIDM model, the absence of any additional direct coupling with Standard Model particles is assumed. However, for scalar dark matter particles there is no symmetry that suppresses the Higgs portal coupling. In this paper, we therefore study the impact of a non-zero interaction with the Higgs field on the PIDM paradigm for scalar dark matter. In particular, we fully explore the model parameter space in order to identify the allowed regions where the correct dark matter abundance is achieved. Moreover, we provide the threshold value for the Higgs portal coupling below which the corresponding production processes are sub-dominant and the minimal PIDM scenario is preserved. For a benchmark scalar dark matter mass of $10^{15}$ GeV, we find that the Higgs portal coupling has to be smaller than $5.1 \times 10^{-8}$ ($1.1 \times 10^{-7}$) for instantaneous (non-instantaneous) reheating.
