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Active-to-sterile neutrino dipole portal and the XENON1T excess

Active-to-sterile neutrino dipole portal and the XENON1T excess

In this paper, we find that a magnetic transition dipole moment between tau and sterile neutrinos can account for the XENON1T excess events. Unlike the ordinary neutrino dipole moment, the introduction of the new sterile mass scale allows for astrophysical bounds to be suppressed. Interestingly, the best-fit regions that are …