Final Results of the MAJORANA DEMONSTRATOR
ORAL
Abstract
The MAJORANA DEMONSTRATOR is a low background experiment searching for neutrinoless double-beta decay (0νββ) in 76Ge and other rare events originating from physics beyond the standard model. The DEMONSTRATOR consisted of an array of high purity germanium detectors using three different p-type point-contact geometries (PPC, ICPC and BEGe), housed at the Sanford Underground Research Facility in Lead, SD. Thanks to its ultra-low background materials, world-leading energy resolution, and pulse-shape analysis background rejection techniques, the experiment achieved one of the lowest background indices to date for a 0νββ search. The experiment finished taking data with enriched detectors in March 2021 and, with 64.5 kg-yr of enriched exposure, produced a final half-life limit of T1/2>8.3×1025 yr. This talk will present the final half-life limit, other recent results, and ongoing analysis efforts for the MAJORANA DEMONSTRATOR.
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Presenters
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Ian Guinn
University of North Carolina at Chapel Hill
Authors
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Ian Guinn
University of North Carolina at Chapel Hill