Nuclear shell-model uncertainties cause over 100% uncertainties on some tellurium-based dark matter coupling limits, comparable to xenon, while leaving the annual modulation phase unchanged.
Search for dark matter annual modulation with DarkSide-50
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abstract
Dark matter induced event rate in an Earth-based detector is predicted to show an annual modulation as a result of the Earth's orbital motion around the Sun. We searched for this modulation signature using the ionization signal of the DarkSide-50 liquid argon time projection chamber. No significant signature compatible with dark matter is observed in the electron recoil equivalent energy range above $40~{\rm eV_{ee}}$, the lowest threshold ever achieved in such a search.
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Uncertainties in tellurium-based dark matter searches stemming from nuclear structure uncertainties
Nuclear shell-model uncertainties cause over 100% uncertainties on some tellurium-based dark matter coupling limits, comparable to xenon, while leaving the annual modulation phase unchanged.