Abstract We perform a constrained spectral fit analysis of the excess observed in the electron recoil energy spectrum by XENON1T with neutrino magnetic moment, charge radius, neutrino millicharge and new light vector and scalar mediators. Within limits allowed by other laboratory experiments we find that the excess can be explained in the range ( 2 − 4 ) × 10 − 11 μ B for the magnetic moment, ( 2 − 6 ) × 10 − 31 cm2 for the charge radius, ( 1.7 − 2.3 ) × 10 − 12 e for the millicharge and ( 10 − 100 ) keV masses of light mediators with couplings of 3.5 × 10 − 7 for vector/axial-vector, 1 × 10 − 6 and 4 × 10 − 6 for scalar and pseudo-scalar mediators respectively. Among all neutrino millicharge, magnetic moment and vector mediators fit better to the observed spectrum. We also derive constraints on all new physics parameters considered here.

中文翻译：

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非标准中微子相互作用能否解释 XENON1T 光谱过剩？

摘要 我们使用中微子磁矩、电荷半径、中微子毫电荷和新的光矢量和标量介质对 XENON1T 在电子反冲能谱中观察到的过量进行了约束谱拟合分析。在其他实验室实验允许的范围内，我们发现磁矩在 ( 2 − 4 ) × 10 − 11 μ B 范围内，电荷半径在 ( 2 − 6 ) × 10 − 31 cm2 范围内可以解释过量，（ 1.7 − 2.3 ) × 10 − 12 e 毫电荷和 ( 10 − 100 ) keV 质量的光介体，矢量/轴矢量耦合为 3.5 × 10 − 7，1 × 10 − 6 和 4 × 10 − 6 为分别为标量和伪标量介体。在所有中微子毫电荷中，磁矩和矢量介体更适合观察到的光谱。我们还推导出对这里考虑的所有新物理参数的约束。