论文标题
大气暗物质和异味过多
Atmospheric Dark Matter and Xenon1T Excess
论文作者
论文摘要
最近，Xenon1t合作报告了一种有趣的电子后坐力过剩，这可能暗示着轻质的暗物质。为了解释这种异常，我们提出了大气暗物质（ADM）与宇宙射线（CRS）与大气的无弹性碰撞。由于高能量CR的增强作用，我们表明光ADM可以快速移动，并通过ADM-电子散射过程成功地拟合了观察到的电子后坐力光谱。同时，我们的ADM预测散射横截面$σ_e\ sim {\ cal o}（10^{ - 38} -10^{ - 39} $）cm $ $^{2} $，因此可以逃避其他直接检测约束。搜索光介子稀有衰减，例如$η\至π+ \ slashed e_t $，将来会提供我们对我们ADM的互补探针。
Very recently, the Xenon1T collaboration has reported an intriguing electron recoil excess, which may imply for light dark matter. In order to interpret this anomaly, we propose the atmospheric dark matter (ADM) from the inelastic collision of cosmic rays (CRs) with the atmosphere. Due to the boost effect of high energy CRs, we show that the light ADM can be fast-moving and successfully fit the observed electron recoil spectrum through the ADM-electron scattering process. Meanwhile, our ADM predicts the scattering cross section $σ_e \sim {\cal O}(10^{-38}- 10^{-39}$) cm$^{2}$, and thus can evade other direct detection constraints. The search for light meson rare decays, such as $η\to π+ \slashed E_T$, would provide a complementary probe of our ADM in the future.
