Charged Q-ball Dark Matter from $B$ and $L$ direction
Charged Q-ball Dark Matter from $B$ and $L$ direction
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来自 $B$ 和 $L$ 方向的带电 Q 球暗物质
DOI：
10.1088/1475-7516/2016/08/053
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M.~Kawasaki and M.~Yamada,
中科院分区：
文献类型：
--
作者：
J.~P.~Hong;M.~Kawasaki and M.~Yamada,
我们考虑了在BBN时代之前几乎相同数量的规范中介型带电（反）Q球，其电荷为±α− 1 <$±137，并讨论了它们如何随时间演化。我们发现带+ O（1）电荷的类离子物体很可能成为现在宇宙中的遗迹，我们预计这就是暗物质。这些都受到了MICA实验的限制，在109岁的古老云母晶体中没有观察到重原子或离子类物体的踪迹。我们发现，规范调解模型参数和再加热温度的允许范围必须小于中性Q球暗物质的情况下。
We consider nearly equal number of gauge mediation type charged (anti-) Q-balls with charge of±α− 1≃±137 well before the BBN epoch and discussed how they evolve in time. We found that ion-like objects with electric charges of+ O (1) are likely to become relics in the present universe, which we expect to be the dark matter. These are constrained by MICA experiment, where the trail of heavy atom-like or ion-like object in 10 9 years old ancient mica crystals is not observed. We found that the allowed region for gauge mediation model parameter and reheating temperature have to be smaller than the case of the neutral Q-ball dark matter.