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Colloquia
Direct Detection of sub-GeV Dark Matter
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Europe/Madrid
C7b/058 - Seminar (IFAE Main Building C7b)
C7b/058 - Seminar
IFAE Main Building C7b
80
Description
Dark matter makes up 85% of the matter in our Universe, but we have yet to learn its identity. A major effort in our quest to identify dark matter are “direct-detection experiments,” which search for dark matter particles in our Milky-Way halo as they traverse Earth and interact in our detectors. A wide range of materials and ultrasensitive detectors are needed to probe dark matter across a vast range of masses and interactions. I will focus on dark matter with masses between about 1 keV/c^2 to 1 GeV/c^2 (“sub-GeV dark matter”), and describe how these can be probed by searching for dark matter scattering with electrons in various target materials, such as noble liquids and semiconductors. I will in particular highlight the experiments SENSEI, DAMIC-M, and Oscura, which use silicon Skipper-CCDs capable of measuring even single-electron events. I will also describe how dark matter that has very strong interactions with ordinary matter can be probed by placing Skipper-CCDs on a satellite, and how such dark matter can be constrained using “dark images” from the Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope (JWST). Together, we are poised to probe vast new regions of uncharted dark matter territory in the next few years.
Organized by
Diego Blas
