论文标题
从Xenon1t实验中散发出有关无菌中微子的新灯
Shedding New Light on Sterile Neutrinos from XENON1T Experiment
论文作者
论文摘要
Xenon1t合作最近报告了后坐力电子的过量事件，可能会深入了解粒子物理的标准模型（SM）以外的新领域。我们试图通过考虑无菌中微子和SM颗粒之间有效的相互作用来解释这一过量。在本文中，我们提出了一个有效的模型，该模型基于低能的低能量的一颗迹法相互作用顶点，该模型是由SM仪表对称的四效算子在高能量下引起的。有效的相互作用强度受到SM精度测量，天体物理和宇宙学观察的约束。我们引入了无菌中微子和SM中微子之间的一种新型有效的电磁相互作用，该相互作用可以通过Xenon电子的无菌中微子暗物质的非弹性散射成功解释Xenon1T事件速率。我们发现，质量约为90美元的无菌中微子和特定有效耦合的无菌中微子可以与Xenon1t数据非常吻合，其中最好的拟合点可以保留DM约束，并且可能描述了其他实验中的异常情况。
The XENON1T collaboration recently reported the excess of events from recoil electrons, possibly giving an insight into new area beyond the Standard Model (SM) of particle physics. We try to explain this excess by considering effective interactions between the sterile neutrinos and the SM particles. In this paper, we present an effective model based on one-particle-irreducible interaction vertices at low energies that are induced from the SM gauge symmetric four-fermion operators at high energies. The effective interaction strength is constrained by the SM precision measurements, astrophysical and cosmological observations. We introduce a novel effective electromagnetic interaction between sterile neutrinos and SM neutrinos, which can successfully explain the XENON1T event rate through inelastic scattering of the sterile neutrino dark matter from Xenon electrons. We find that sterile neutrinos with masses around $90$ keV and specific effective coupling can fit well with the XENON1T data where the best fit points preserving DM constraints and possibly describe the anomalies in other experiments.
