Jul 18 – 22, 2022
Europe/Zurich timezone

Searches for exotic dark matter with the Majorana Demonstrator

Jul 18, 2022, 3:00 PM
20m
EI8

EI8

Speaker

Reyco Henning (U. of North Carolina at Chapel Hill)

Description

With its excellent energy resolution and ultra-low backgrounds, the high-purity germanium detectors in the MAJORANA DEMONSTRATOR enable several searches for beyond the Standard Model physics ranging from the primary neutrinoless double beta decay search to searches for several classes of exotic dark matter models. Many of these dark matter models predict a peaked signature in an energy spectrum, which can be clearly resolved by germanium detectors. The MAJORANA detectors were operated in a low-background shield at the Sanford Underground Research Facility, and our search utilizes the 1–100 keV region of a 37 kg-year exposure collected between May 2016 and November 2019. In this talk, I will present new experimental limits for fermionic dark matter absorption, sub-GeV dark matter 3-2 body scattering, bosonic dark matter (axionlike particles and dark photons), and keV-scale sterile neutrino dark matter.

Primary authors

Clint Wiseman (University of Washington) Mariano Lopez Kim In wook (Los Alamos National Laboratory) Wenqin Xu (University of South Dakota) Reyco Henning (U. of North Carolina at Chapel Hill)

Presentation materials