The final results of the Majorana collaboration's search for neutrinoless double-beta decay

For more than half a decade, the Majorana Collaboration, a large consortium of researchers from different universities worldwide, have been trying to observe neutrinoless double-beta decay, one of the rarest forms of radioactive decay. This was done using the Majorana Demonstrator, a detector located at the Sanford Underground Research Facility in South Dakota, a laboratory that is almost 1 mile underground.