论文标题
从$^7 $的衰减中存在的量子量子中微子的限制是超导量子传感器
Limits on the Existence of sub-MeV Sterile Neutrinos from the Decay of $^7$Be in Superconducting Quantum Sensors
论文作者
论文摘要
无菌中微子是粒子物理标准模型的自然扩展，并为黑暗扇区提供了门户。我们报告了使用衰减摩托巨型重建技术在$^7 $ BE的衰减中，对Sub-Mev无菌中微子的存在进行了新的搜索。该实验测量了$^7 $ li子原子的总能量，将$^7 $的电子捕获衰变植入敏感的超导隧道连接（STJ）量子传感器中。第一个实验介绍了来自单个STJ的数据，该数据以低计数速率运行，总计28天，并对质量中微子的排除限制在100至850 keV的质量范围内，可改善先前工作的数量级。
Sterile neutrinos are natural extensions to the standard model of particle physics and provide a possible portal to the dark sector. We report a new search for the existence of sub-MeV sterile neutrinos using the decay-momentum reconstruction technique in the decay of $^7$Be. The experiment measures the total energy of the $^7$Li daughter atom from the electron capture decay of $^7$Be implanted into sensitive superconducting tunnel junction (STJ) quantum sensors. This first experiment presents data from a single STJ operated at a low count rate for a net total of 28 days, and provides exclusion limits on sterile neutrinos in the mass range from 100 to 850 keV that improve upon previous work by up to an order of magnitude.
