arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1808.08706hep-ph
收藏

标度不变的双组分暗物质

Scale-Invariant Two Component Dark Matter

Seyed Yaser Ayazi, Ahmad Mohamadnejad

摘要:

我们研究了标准模型的一个尺度不变的扩展,它可以同时解释暗物质和层次问题。在我们的方案中,我们引入标量场和旋量场作为双组分暗物质,并引入标量场作为介质。有趣的是,由于尺度不变的条件下,我们的模型相比其他两个组件的暗物质模型,它具有较低的独立参数。探讨了双组分暗物质候选者可能的天体物理和实验室特征,并表明旋量暗物质对观测到的暗物质残余密度的贡献最大。研究了这些暗物质粒子的可探测性,并利用直接不可见的Higgs衰变实验排除了模型的部分参数空间。此外,考虑了暗物质的自相互作用,并表明它们的贡献在共振区域中饱和了这种约束。

英文摘要:

We study a scale invariant extension of the standard model which can explain simultaneously dark matter and the hierarchy problem. In our set-up, we introduce a scalar and a spinor as two-component dark matter in addition to scalon field as a mediator. Interesting point about our model is that due to scale invariant conditions, compared to other two-component dark matter models, it has lower independent parameters. Possible astrophysical and laboratory signatures of two-component dark matter candidate are explored and it is shown that the most contribution of observed relic density of dark matter can be determined by spinor dark matter. Detectability of these dark matter particles is studied and the direct and invisible Higgs decay experiments are used to rule out part of the parameter space of the model. In addition, the dark matter self-interactions are considered and shown that their contribution saturate this constraint in the resonant regions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑