A Parallel World in the Dark
A Parallel World in the Dark
复制标题
黑暗中的平行世界
DOI：
10.1088/1475-7516/2013/08/031
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Kwang Sik Jeong and Fuminobu Takahashi
中科院分区：
文献类型：
--
作者：
Tetsutaro Higaki;Kwang Sik Jeong and Fuminobu Takahashi
重子-暗物质的巧合是一个长期存在的问题。有趣的是，最近的观测表明暗辐射的存在，如果得到证实，将提出另一个巧合问题，即为什么暗辐射的密度与光子的密度相当。这些惊人的巧合可以追溯到暗区，其粒子内容和相互作用与标准模型非常相似，如果不是完全相同的话：一个黑暗的平行世界。它自然地解决了暗物质和暗辐射的符合问题，并预言了质量为O（0.1− 1）eV的无菌中微子，以及由普通重子对应物组成的自相互作用暗物质。我们发现了一个强有力的预测之间的关系的丰富的暗辐射和不育中微子，这可以作为吸烟枪的证据，黑暗的平行世界。
The baryon-dark matter coincidence is a long-standing issue. Interestingly, the recent observations suggest the presence of dark radiation, which, if confirmed, would pose another coincidence problem of why the density of dark radiation is comparable to that of photons. These striking coincidences may be traced back to the dark sector with particle contents and interactions that are quite similar, if not identical, to the standard model: a dark parallel world. It naturally solves the coincidence problems of dark matter and dark radiation, and predicts a sterile neutrino (s) with mass of Script O (0.1− 1) eV, as well as self-interacting dark matter made of the counterpart of ordinary baryons. We find a robust prediction for the relation between the abundance of dark radiation and the sterile neutrino, which can serve as the smoking-gun evidence of the dark parallel world.