Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 18: Search for Dark Matter 1

T 18.7: Vortrag

Montag, 4. März 2024, 17:30–17:45, Geb. 30.35: HSI

Dark matter-electron search using cryogenic light detectors — •Vanessa Zema — Max Planck Institute for Physics, Munich, Germany

Dark matter (DM) may be constituted by MeV/c2 particles with coupling to electrons. Nobel gas detectors or solid state materials with electronic energy gaps are employed to investigate this hypothesis. Considering the solid state detectors, the common choice is to use semiconductors and measure the charge using for example CCDs detectors or cryogenic calorimeters subjected to electromagnetic fields. In this talk we report on a different technique for DM-electron interaction search which is based on the measure of the scintillation light stimulated by a particle scattering off electrons in scintillating cryogenic calorimeters, with a focus on sodium iodide targets. We study the phenomenology and calculate the projected sensitivity on the DM-electron cross-section as a function of the DM mass to plan the detector design and estimate what is the aimed background level and energy resolution required to setup a future dedicated experiment.

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