Speaker
Description
Neutrinoless double beta decay searches play a major role in determining neutrino properties. The
MAJORANA Collaboration is operating an ultra-low background, modular high-purity Ge detector array to search for this decay in $^\mathrm{76}$Ge. Located at the 4850-ft level of the Sanford Underground Research Facility, the DEMONSTRATOR's goal is to achieve a background rate low enough to support the design of a future tonne-scale $^\mathrm{76}$Ge experiment.
The experiment has achieved an energy resolution of ~2.5 keV FWHM at the Q-value, which is the best among all double-beta decay experiments. The excellent energy resolution and ultra-low background allows the DEMONSTRATOR to establish stringent limits double-beta decay to excited states, and physics beyond the Standard Model searches, such as bosonic dark matter and axions.
In this talk, I will show recent results of a hardware upgrade. I also will give an overview on improved analysis methods and report on the progress in developing a complete background model of the MAJORANA DEMONSTRATOR. I will present recent results, and discuss what the prospects for a future ton-scale experiment are.
Details
Ralph Massarczyk, LANL, USA
| Is this abstract from experiment? | Yes |
|---|---|
| Name of experiment and experimental site | MAJORANA |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | Yes |
