Does a Southern Hemisphere NaI detector see the same-phase modulation?
This text mentions work from 2024 on. Those parts were partly written without a live literature search and have not been checked by an editor yet.
In plain words
Seasons are reversed in the Southern Hemisphere, but Earth's motion through dark matter is not. A sodium iodide detector in Australia tests whether DAMA's yearly wave follows the seasons or the dark matter.
Precise statement
SABRE South (Stawell Underground Physics Laboratory, Australia, about 2900 m water equivalent) operates low-background NaI(Tl) crystals with a liquid scintillator veto. The question is whether its 1-6 keV single-hit rate shows a modulation with amplitude near 0.01 cpd/kg/keV and phase near June 2 (dark matter like), phase shifted by about six months (seasonal environment like), or no modulation.
What would settle it
A multi-year SABRE South modulation analysis with sensitivity to exclude or confirm the DAMA amplitude at $3\sigma$ or better, ideally with its twin SABRE North at LNGS.
Status in the literature
Unverified note: it names recent work and was partly written without a live literature search; it awaits a check by an editor.
SABRE South completed underground assembly milestones in 2025 with full commissioning planned for 2026.
Parent problems
- Special case of What produces the DAMA/LIBRA annual modulation? · open · from revision 1
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