论文标题
使用完整的pandax-II数据搜索太阳轴和异常中微子磁矩
A search for solar axions and anomalous neutrino magnetic moment with the complete PandaX-II data
论文作者
论文摘要
我们报告了使用Pandax-II的完整数据集中使用低能电子后坐力事件搜索新物理信号，鉴于Xenon1t报告的最近事件过剩。数据对应于用液体氙的总暴露100.7吨。通过对主要背景光谱的强大估计，我们对太阳轴和中微子进行敏感搜索，并具有增强的磁矩。我们发现，对于轴质量小于$ \ rm 0.1〜kev/c^2 $，轴 - electron耦合$ g_ {ae} <4.6 \ times 10^{-12} $，neutrino磁矩$μ_ν<4.9 \ 4.9 \ times 10^{ - 11}} { - 11}}}μ__{b} 90％cluster。观察到的来自Xenon1t的过量在我们的实验限制内。
We report a search for new physics signals using the low energy electron recoil events in the complete data set from PandaX-II, in light of the recent event excess reported by XENON1T. The data correspond to a total exposure of 100.7 ton-day with liquid xenon. With robust estimates of the dominant background spectra, we perform sensitive searches on solar axions and neutrinos with enhanced magnetic moment. We find that the axion-electron coupling $g_{Ae}<4.6\times 10^{-12}$ for an axion mass less than $\rm 0.1~keV/c^2$ and the neutrino magnetic moment $μ_ν<4.9\times 10^{-11}μ_{B}$ at 90% confidence level. The observed excess from XENON1T is within our experimental constraints.
