Speaker
Description
The CUPID-Mo experiment, located in the Laboratoire Souterrain de Modane (France), is a demonstrator for the next generation 0νββ experiment CUPID. The experiment is an array of 20 enriched Li$_2$ $^{100}$MoO$_4$ bolometers and 20 Ge light detectors, working at 20 mK. The experiment has collected data from spring 2019 to summer 2020, for a total exposure of 2.71 kg.yr. Within this exposure, no event in the region of interest and hence no evidence for 0νββ is observed. It has been possible to set a new world-leading limit on the half-life of 0νββ decay of $^{100}$Mo (T$_{1/2}$ > 1.8 x 10$^{24}$ yr (stat. + syst.) at 90% C.L.). This corresponds to an effective Majorana mass limit of 〈𝑚$_{𝛽𝛽}$〉 < (0.28 - 0.49) eV, in the light Majorana neutrino exchange interpretation. In this contribution, the detector technology, the experimental set-up, the performed analysis for the 0νββ decay search, the results for the half-life of the excited states ($^{100}$Mo->$^{100}$Ru), and the background model will be presented.
