15.03.2018New lower limit on the half-life of the neutrinoless double beta decay

By operating bare Ge diodes in liquid argon, we have achieved an unprecedented low background level for germanium detectors  of 1 x 10^-3 events/(keV kg yr) in the search region. We have increased the exposure for BEGe-type detectors threefold with respect to our previous data release [Nature 544, 2017], and  in the absence of a signal, we set a new lower limit on the half-life of 8.0 x 10²⁵ yr. The manuscript detailing our new results is published in Phys. Rev. Lett. 120, 132503 (2018).