CUPID: The Next-Generation Neutrinoless Double Beta Decay Experiment

CUPID is a next-generation tonne-scale bolometric neutrinoless double beta decay experiment that will probe the Majorana nature of neutrinos and discover lepton number violation in case of observation of this singular process. CUPID will be built on experience, expertise and lessons learned in CUORE and will be installed in the current CUORE infra-structure in the Gran Sasso underground laboratory. The CUPID detector technology, successfully tested in the CUPID-Mo experiment, is based on scintillating bolometers of Li2MoO4 enriched in the isotope of interest Mo-100. In order to achieve its ambitious science goals, the CUPID collaboration aims to reduce the backgrounds in the region of interest by a factor 100 with respect to CUORE. This performance will be achieved by introducing the high efficient alpha/ beta discrimination demonstrated by the CUPID-0 and CUPID-Mo experiments, and using a high transition energy double beta decay nucleus such as Mo-100 to minimize the impact of the gamma background. CUPID will consist of about 1500 hybrid heat-light detectors for a total isotope mass of 250 kg. The CUPID scientific reach is supported by a detailed and safe background model based on CUORE, CUPID-Mo and CUPID-0 results. The required performances have already been demonstrated and will be presented.

Automated summary

CUPID is a next-generation bolometric neutrinoless double beta decay experiment that aims to probe the Majorana nature of neutrinos. The experiment will be built on the experience of previous experiments and will be installed in an underground laboratory. The CUPID collaboration plans to reduce backgrounds and achieve ambitious science goals by using efficient alpha/beta discrimination and a high transition energy double beta decay nucleus.