XENON1T observes tritium

Abstract

XENON1T recently reported an excess of low-energy electron recoil events that may be attributable to either new physics or to the radioactive decay of tritium. It is likely that hydrogen is not be effectively removed by the hot zirconium getters deployed in the detector. Cosmogenic activation of the xenon underground is found to be insufficient to describe the observed excess, although gases diffusing out of detector materials from cosmogenic activation on surface may contribute. Changes in the operation of gas purification systems for XENON1T and other liquid nobel gas detectors could both confirm the tritium hypothesis and remove it from the detector.

arXiv commentCorrected equation 1. Typo corrections. Removed possibility that XENON1T doesn't contain a Hydrogen Removal Unit

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• Direct detection of freeze-in inelastic dark matter
• An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess
• Probing the relaxed relaxion and Higgs-portal with S1 & S2
• Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils
• Solar Neutrino Scattering with Electron into Massive Sterile Neutrino
• Mirror Dark Matter and Electronic Recoil Events in XENON1T
• Impact of loop-induced processes on the boosted dark matter interpretation of the XENON1T excess
• Constraints on electron-scattering interpretation of XENON1T excess
• XENON1T Excess: Some Possible Backgrounds
• Solar Active-Sterile Neutrino Conversion with Atomic Effects at Dark Matter Direct Detection Experiments
• GeV Scale Inelastic Dark Matter with Dark Photon Mediator via Direct Detection and Cosmological/Laboratory Constraints
• Decaying fermionic warm dark matter and XENON1T electronic recoil excess
• Study of cosmogenic activation above ground for the DarkSide-20k experiment
• Explaining The XENON1T Excess With Light Goldstini Dark Matter
• Dark Fluxes from Accreting Black Holes and Direct Detections