First direct search for light dark matter interactions in a transition-edge sensor

• URL: http://arxiv.org/abs/2506.18982v2
• Date: Fri, 15 Aug 2025 07:33:39 GMT
• Title: First direct search for light dark matter interactions in a transition-edge sensor
• Authors: Christina Schwemmbauer, Guy Daniel Hadas, Yonit Hochberg, Katharina-Sophie Isleif, Friederike Januschek, Benjamin V. Lehmann, Axel Lindner, Adriana E. Lita, Manuel Meyer, Gulden Othman, Elmeri Rivasto, José Alejandro Rubiera Gimeno,
• Abstract summary: We propose the use of transition-edge sensor (TES) single-photon detectors as a simultaneous target and sensor for direct dark matter searches.<n>We perform a 489 h science run with a TES device optimized for the detection of 1064 nm photons, with a mass of 0.2 ng and an energy threshold of 0.3 eV.<n>With their excellent energy resolution, TESs enable search strategies that are complementary to recent results from superconducting nanowire single-photon detectors and kinetic inductance detectors.
• Score: 0.05185707610786574
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose the use of transition-edge sensor (TES) single-photon detectors as a simultaneous target and sensor for direct dark matter searches, and report results from the first search of this kind. We perform a 489 h science run with a TES device optimized for the detection of 1064 nm photons, with a mass of ~0.2 ng and an energy threshold of ~0.3 eV, and set new limits on dark matter interactions with both electrons and nucleons for dark matter with mass below the MeV scale. With their excellent energy resolution, TESs enable search strategies that are complementary to recent results from superconducting nanowire single-photon detectors and kinetic inductance detectors. We show that next-generation TES arrays hold promise to probe new regions of light dark matter parameter space.

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