论文标题
太阳发射和KEV尺度暗物质的深色光子的新限制
New limits on dark photons from solar emission and keV scale dark matter
论文作者
论文摘要
我们提供有关深色光子太阳发射的限制的更新，或更通常的任何光矢量粒子耦合到电子矢量电流。最近，来自Xenon1t的2019年和2020年电子后坐力数据现在比亚基质量质量区域的恒星能量损失提供了更严格的限制。我们还表明，深色光子的太阳发射不能很好地适合2-5 KEV能量箱中最近的Xenon1t过量。相比之下，饱和局部暗物质质量密度的2-4 keV质量暗光子的吸收确实可以很好地适合多余，以在（4-12）\ times 10^{ - 16} $中混合角度，同时满足天体物理物理约束。同样，其他利用矢量门户的模型可以适应多余的模型，包括那些直接将深色光子场强度与电子旋转搭配的操作员。
We provide updates to the limits on solar emission of dark photons, or more generally any light vector particle coupled to the electron vector current. The recent 2019 and 2020 electronic recoil data from XENON1T now provides more stringent constraints on these models than stellar energy loss in the sub-keV mass region. We also show that solar emission of dark photons does not provide a good fit to the recent XENON1T excess in the 2-5 keV energy bins. In contrast, the absorption of 2-4 keV mass dark photons that saturate the local dark matter mass density does provide a good fit to the excess, for mixing angles in the range $ε\in (4-12)\times 10^{-16}$, while satisfying astrophysical constraints. Similarly, other models utilizing the vector portal can fit the excess, including those with operators that directly couple the dark photon field strength to electron spin.
