A radiative seesaw model linking to XENON1T anomaly

Abstract

We propose an attractive model that excess of electron recoil events around 1-5 keV reported by the XENON1T collaboration nicely links to the tiny neutrino masses based on a radiative seesaw scenario. Our dark matter(DM) is an isospin singlet inert boson that plays an role in generating non-vanishing neutrino mass at one-loop level, and this DM inelastically interacts with a pair of electrons at one-loop level that is required to explain the XENON1T anomaly. It is also demanded that the mass difference between an excited DM and DM has to be of the order keV. Interestingly, the small mass difference $\sim$keV is proportional to the neutrino masses. It suggests that we have double suppressions through the tiny mass difference and the one-loop effect. Then, we show some benchmark points to explain the XENON1T anomaly, satisfying all the constraints such as the event ratio of electrons of XENON1T, a long lived particle be longer than the age of Universe, and relic density in addition to the neutrino oscillation data and lepton flavor violations(LFVs).

arXiv comment14 pages, 3 figures, 1 table

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• Shedding New Light on Sterile Neutrinos from XENON1T Experiment
• Boosted Self-Interacting Dark Matter and XENON1T Excess
• Xenon-1T excess as a possible signal of a sub-GeV hidden sector dark matter
• GeV Scale Inelastic Dark Matter with Dark Photon Mediator via Direct Detection and Cosmological/Laboratory Constraints
• Inelastic Dark Matter from Dark Higgs Boson Decays at FASER
• Connecting Low scale Seesaw for Neutrino Mass to Inelastic sub-GeV Dark Matter with Abelian Gauge Symmetry
• Dark Fluxes from Accreting Black Holes and Direct Detections