论文标题
Pandax-II电子后坐力数据对通用光介质的限制
Constraints on General Light Mediators from PandaX-II Electron Recoil Data
论文作者
论文摘要
Pandax-II已经分析了他们的电子后坐力能量谱的完整数据集，并确认了Xenon1t（1-7）KeV多余，尽管也发现了与总背景兼容。治疗背景众所周知，在这种情况下，它为观察到的频谱提供了很好的拟合，人们可以期望使用此数据对任何新的物理模型产生更强大的约束。有了这种动机，我们会根据新的通用矢量（V），轴向矢量（a），标量（S）和伪尺度（p）相互作用得出约束，如果它们中的任何一个有助于中微子电子弹性散射。对耦合的派生约束分别为$ 90 \％$ c.l。，$ g_ {v^{^{^{\ prime}}}} \ sillsim 32 \ times 10^{ - 7} $对于中间器质量$ {\ sime $ {\ silysim 10} $ kev，$ kev，$ kev，$ g _} \ times 10^{ - 7} $对于质量$ $ {\ LISSSIM 10} $ kev，$ g_ {s} \ LISSSIM 49 \ times 10^{ - 7} $ for Mass $ $ {\ LISSSIM 20} $ kev和$ g_ kev and $ g_ {p} \ sims 67 \ lisssim 67 \ times times times times times 10^$ sims $ sim $ kerv $ kerv $ kerv $ kerv $ kev = $ sev}
PandaX-II has analyzed their complete data set of the electron recoil energy spectrum and has confirmed the XENON1T (1-7) keV excess, although the excess was also found compatible with the total background. Treating the background as well known, in which case it provides a good fit to the observed spectrum, one can expect stronger constraints on any new physics model with this data. With this motivation, we derive constraints on the new general vector (V), axial-vector (A), scalar (S) and pseudoscalar (P) interactions if any of them contribute to the neutrino-electron elastic scattering. The derived constraints on the couplings at $90\%$ C.L., respectively, are $g_{V^{^{\prime }}} \lesssim 32 \times 10^{-7}$ for the mediator mass ${\lesssim 10}$ keV, $g_{A^{^{\prime }}} \lesssim 34 \times 10^{-7}$ for mass ${\lesssim 10}$ keV, $g_{S}\lesssim 49 \times 10^{-7}$ for mass ${\lesssim 20}$ keV and $g_{P} \lesssim 67 \times 10^{-7}$ for mass ${\lesssim 30}$ keV.
