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June 22, 2020 to July 2, 2020
US/Central timezone

Status and Results from the MAJORANA DEMONSTRATOR Experiment

Not scheduled
10m

Speakers

José Mariano López-Castaño (University of South Dakota) Nicholas Ruof (University of Washington) Alexandru Hostiuc (University of Washington)

Description

The MAJORANA DEMONSTRATOR experiment is searching for neutrinoless double-beta decay (0$\nu\beta\beta$) in Ge-76 with an array of p-type, point-contact (PPC) Ge detectors. A total of 44 kg (30 kg enriched in Ge-76) of Ge detectors are split between two modules and operating in a low background passive and active shield since 2015 at SURF. An unprecedented energy resolution of 2.5 keV FWHM and a low background rate at 2039 keV allows sensitivity to a competitive 0$\nu\beta\beta$ half-life from a modest exposure. Due to its low energy threshold and low background rate, the DEMONSTRATOR has also been used to search for other physics beyond the Standard Model, including bosonic dark matter and tri-nucleon decay. PPC technology allows for excellent energy resolution and the identification of specific background event populations. We present the latest analysis improvements, recent hardware upgrade, and the overall performance and results from the MAJORANA DEMONSTRATOR.

Mini-abstract

Analysis improvements strengthen the performance of the MAJORANA DEMONSTRATOR Experiment

Experiment/Collaboration MAJORANA Collaboration

Primary authors

José Mariano López-Castaño (University of South Dakota) Nicholas Ruof (University of Washington) Alexandru Hostiuc (University of Washington)

Presentation Materials