Directional Dark Matter and other Rare Searches with gas TPCs

Jun 12, 2025, 4:54 PM
23m
Beefeaters

Beefeaters

Parallel session presentation Dark Matter Dark Matter

Speaker

Prof. Dinesh Loomba (University of New Mexico)

Description

The leading dark matter (DM) experiments are seeing hints of nuclear recoils from coherent scattering with solar neutrinos, and will soon enter the so-called neutrino fog.
Discrimination against this background will require detectors that can measure recoil directions to distinguish solar neutrino signals from those of Galactic DM. Of current technologies employed to detect this directional signature, the low-pressure gas TPC is the most mature. Due to low target density, the central challenge of this effort is scale-up while maintaining directional sensitivity at low energies. Numerous other rare searches also require directionality, so that a staged approach to scale-up can lead to discovery opportunities along the way. After reviewing the status of directional DM experiments, I will briefly describe a few of those applications with special emphasis on our ongoing search for the Migdal effect using a table-top size TPC.

Primary author

Prof. Dinesh Loomba (University of New Mexico)

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