First observation of single photons in a CRESST detector and new dark matter exclusion limits
arxiv(2024)
摘要
The main goal of the CRESST-III experiment is the direct detection of dark
matter particles via their scattering off target nuclei in cryogenic detectors.
In this work we present the results of a Silicon-On-Sapphire (SOS) detector
with a mass of 0.6g and an energy threshold of (6.7±0.2)eV
with a baseline energy resolution of (1.0±0.2)eV. This allowed
for a calibration via the detection of single luminescence photons in the
eV-range, which could be observed in CRESST for the first time. We present new
exclusion limits on the spin-independent and spin-dependent dark matter-nucleon
cross section that extend to dark matter particle masses of less than
100MeV/c^2.
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