Recent Results and Status of the Majorana Demonstrator Experiment

Observing neutrino less double beta decay (NLDBD) requires ultra-low background experiments with great energy resolution to distinguish against the intrinsic two neutrino double beta decay. The use of high purity germanium detectors (HPGe) is one of the best possible choices to perform this measurement due to their excellent energy resolution and background rejection capabilities. The Majorana Demonstrator, located at the Sanford Underground Research Facility, is demonstrating that a ton-scale germanium experiment is capable of probing NLDBD at the inverted ordering mass scale. The experiment uses two modular arrays of HPGe detectors, 44 kg total in mass, of which 30 kg is enriched to 88% in ⁷⁶Ge. The detectors are surrounded by active and passive shielding with its most sensitives parts constructed from ultrapure materials to reduce the background. I will discuss the recent results obtained by the Majorana Demonstrator, including both the low background present in the detector and the unprecedented energy resolution achieved.