Fig. 6: Projected sensitivities at 90% confidence level (two-sided) on the elastic, spin-independent DM-nucleon scattering cross section.

The simulations are based on the Detector A performance exploring 26 CaWO₄ detectors with a threshold of 5 eV and an exposure of 15 kg ⋅ day (double dash double dotted) and 70 CaWO₄ detectors with a threshold of 30.1 eV and an exposure of 500 kg ⋅ day (dashed) for two reduction scenarios of the existing Detector A LEE (Excess): 10 times less LEE (in light burgundy color) and 100 times less LEE (in light orange color). For comparison, the limit for Detector A¹⁰ (CRESST-III 2019, solid red line), the same limit but with 10% LEE (dashed red line), and the limit for the SOS detector¹¹ (CRESST-III 2024, solid red line) are shown. The bands represent the 1σ region around the median. The gray area highlights the so-called neutrino fog, calculated for CaWO₄ in ref. ⁴⁸.