The recent evidence for coherent elastic neutrino-nucleus scattering ($\mathrm{CE}\nu \mathrm{NS}$) in the NCC-1701 germanium detector using antineutrinos from the Dresden-II nuclear reactor is in good agreement with standard model expectations. However, we show that a $2\sigma$ improvement in the fit to the data can be achieved if the quenching factor is described by a modified Lindhard model. We also place constraints on the parameter space of a light vector or scalar mediator that couples to neutrinos and quarks, and on a neutrino magnetic moment. We demonstrate that the constraints are quite sensitive to the quenching factor at low recoil energies by comparing constraints for the standard Lindhard model with those by marginalizing over the two parameters of the modified Lindhard model.

中文翻译：

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反应堆中微子相干弹性散射的第一个证据的含义

相干弹性中微子核散射的最新证据（$\mathrm{行政长官}\nu \mathrm{NS}$) 在 NCC-1701 锗探测器中使用来自 Dresden-II 核反应堆的反中微子与标准模型的预期非常吻合。然而，我们证明了一个$2\sigma$如果淬火因子由修改后的 Lindhard 模型描述，则可以改进对数据的拟合。我们还对耦合到中微子和夸克的光矢量或标量介体的参数空间以及中微子磁矩施加了约束。我们通过将标准 Lindhard 模型的约束与边缘化修正 Lindhard 模型的两个参数的约束进行比较，证明了约束对低反冲能量下的淬火因子非常敏感。