Speaker
Description
The MAJORANA DEMONSTRATOR (MJD) experiment is searching for neutrinoless double beta (0$\nu\beta\beta$) decay of $^{76}$Ge with an array of high-purity Germanium (HPGe) detectors, taking data since 2015 on the 4850' level of the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. The DEMONSTRATOR has achieved an energy resolution of 2.53 keV FWHM at the 0$\nu\beta\beta$ decay Q-value, which is the best among all 0$\nu\beta\beta$ decay experiments. The excellent energy resolution and ultra-low background allow the DEMONSTRATOR to establish stringent limits on both 0$\nu\beta\beta$ decay and physics beyond the Standard Model, such as bosonic dark matter and axions. In this talk, we will discuss improved analysis and new findings from the background model development of the DEMONSTRATOR. We will present recent MJD results on 0$\nu\beta\beta$ decay and other physics, along with the status and near-term plans of the experiment.
