The XENON1T collaboration recently reported an excess in electron recoil events in the energy range between 1–7 keV. This excess could be understood to originate from the known solar neutrino flux if neutrinos couple to a light vector mediator with strength $g_{\nu N}$ that kinetically mixes with the photon with strength $\chi$ and $g_{\nu N}\chi \sim {10}^{-13}$. Here, we show that such coupling values can naturally arise in a renormalizable model of long-range vector-mediated neutrino self-interactions. The model could be distinguished from other explanations of the XENON1T excess by the characteristic $1/T^2$ energy dependence of the neutrino-electron scattering cross section. Other signatures include invisible Higgs and $Z$ decays and leptophilic charged Higgses at a few 100 GeV. ALPS II will probe part of the viable parameter space.

中文翻译：

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中微子自相互作用和XENON1T电子反冲过量

XENON1T合作最近报告了在1–7 keV之间的能量范围内电子反冲事件过多。如果中微子耦合到具有强度的光矢量介体，则这种过量可以理解为源自已知的太阳中微子通量。$G_{\nu ñ}$ 与光子动力学地混合在一起并具有强度 $\chi$ 和 $G_{\nu ñ}\chi 〜{10}^{-13}$。在这里，我们表明，这种耦合值自然可以在远程矢量介导的中微子自我相互作用的可重归化模型中出现。该模型可以通过特性来区别于XENON1T的其他解释$\mathrm{1个}/{Ť}^2$中微子电子散射截面的能量依赖性。其他签名包括隐形希格斯和$ž$衰变和亲脂性希格斯数为100 GeV。ALPS II将探查部分可行的参数空间。