论文标题
光矢量介质面向Xenon1t数据
Light vector mediators facing XENON1T data
论文作者
论文摘要
最近，Xenon1T合作发布了有关低能电子后坐力新物理学的搜索的新结果。数据显示低能尾巴中的背景超过了，尤其是$ 2-3 $ kev。由于暴露于0.65美元的$吨，检测效率和能源分辨率很大，该检测器对太阳中微子的背景也很敏感，最突出的贡献由$ pp $ netrinos给出。我们研究了是否可以根据与光矢量粒子介导的新中微子相互作用来解释这种信号。我们发现，过量与低于$ \ Lessim 0.1 $ MEV的矢量质量的解释是一致的。 Xenon1t数据探测的参数空间区域具有竞争性，具有实验室实验的约束，尤其是Gemma，Borexino和Texono。但是，我们指出了与天体物理界和宇宙学观察的严重张力。
Recently the XENON1T collaboration has released new results on searches for new physics in low-energy electronic recoils. The data shows an excess over background in the low-energy tail, particularly pronounced at about $2-3$ keV. With an exposure of $0.65$ tonne-year, large detection efficiency and energy resolution, the detector is sensitive as well to solar neutrino backgrounds, with the most prominent contribution given by $pp$ neutrinos. We investigate whether such signal can be explained in terms of new neutrino interactions with leptons mediated by a light vector particle. We find that the excess is consistent with this interpretation for vector masses below $\lesssim 0.1$ MeV. The region of parameter space probed by the XENON1T data is competitive with constraints from laboratory experiments, in particular GEMMA, Borexino and TEXONO. However we point out a severe tension with astrophysical bounds and cosmological observations.
