论文标题
通过热化增强非对称电荷DM
Boosting Asymmetric Charged DM via Thermalization
论文作者
论文摘要
我们考虑了一个黑色的黑物，有两个暗物质物种，其相反的深色$ U（1）$费用和不对称的人口，其中包括一定程度的暗物质丰度。引入了一种新的增强暗物质的机制，这是由于两个粒子之间的质量层次结构引起的。在银河系中，这两个物种通过深色卢瑟福（Dark Rutherford）散射有效地热量，从而极大地增强了较轻的暗物质粒子，远远高于银河系中的病毒和逃生速度，而深度电荷则阻止了它逃脱。假设深色光子和光子之间存在动力学混合，我们研究了这种情况下这种情况的后果。如果带电的黑暗部门占我们银河系中总DM质量的5％，质量比在$ 10^3-10^4 $之间，我们发现当前和将来的实验可能在迄今未开发的参数范围内探测到质量下降至100 kev的质量降低至100 kev的光线。
We consider a dark sector scenario with two dark matter species with opposite dark $U(1)$ charges and an asymmetric population comprising some fraction of the dark matter abundance. A new mechanism for boosting dark matter is introduced, arising from the large mass hierarchy between the two particles. In the galaxy, the two species thermalize efficiently through dark Rutherford scattering greatly boosting the lighter dark matter particle, far above the virial and escape velocities in the galaxy, while the dark charge prevents it from escaping. We study the consequences of this scenario for direct-detection experiments, assuming a kinetic mixing between the dark photon and the photon. If the charged dark sector makes up 5% of the total DM mass in our galaxy and the mass ratio is between $10^3-10^4$, we find that current and future experiments may probe the boosted light dark matter for masses down to 100 keV, in a hitherto unexplored parameter range.
