Low-Energy Backgrounds in Solid-State Phonon and Charge Detectors
Instrumentation and Detectors2025-03-13v1Instrumentation and Methods for AstrophysicsHigh Energy Physics - ExperimentHigh Energy Physics - PhenomenologyQuantum Physics
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. Their understanding is essential for interpreting particle interactions at and below the eV-scale.
@article{arxiv.2503.08859,
title = {Low-Energy Backgrounds in Solid-State Phonon and Charge Detectors},
author = {Daniel Baxter and Rouven Essig and Yonit Hochberg and Margarita Kaznacheeva and Belina von Krosigk and Florian Reindl and Roger K. Romani and Felix Wagner},
journal= {arXiv preprint arXiv:2503.08859},
year = {2025}
}
Comments
26 pages, 7 figures; in press at the Annual Review of Nuclear and Particle Science