DOE OSTI · 3006642
Low-Energy Backgrounds in Solid-State Phonon and Charge Detectors
Abstract
Solid-state phonon and charge detectors probe the scattering of weakly interacting particles, such as dark matter and neutrinos, through their low recoil thresholds. Recent advancements have pushed sensitivity to eV-scale energy depositions, uncovering previously unseen low-energy excess backgrounds. While some arise from known processes such as thermal radiation, luminescence, and stress, others remain unexplained. This review examines these backgrounds, their possible origins, and parallels to low-energy effects in solids, an understanding of which is essential for interpreting particle interactions at and below the eV scale.
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Baxter, Daniel [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Northwestern University, Evanston, IL (United States)], Essig, Rouven [Stony Brook University, NY (United States)], Hochberg, Yonit [Hebrew University of Jerusalem (Israel); Cornell University, Ithaca, NY (United States)], Kaznacheeva, Margarita [Technical University of Munich, Garching (Germany)], von Krosigk, Belina [Heidelberg University (Germany); Karlsruhe Institute of Technology (KIT) (Germany)], Reindl, Florian [Austrian Academy of Sciences, Vienna (Austria); TU Wien, Vienna (Austria)], Romani, Roger K. [University of California, Berkeley, CA (United States)], Wagner, Felix [ETH Zurich (Switzerland); Paul Scherrer Institute, Villigen (Switzerland)]. 2025-06-24. Low-Energy Backgrounds in Solid-State Phonon and Charge Detectors. https://doi.org/10.1146/annurev-nucl-121423-100849
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