CUPID, the Cuore upgrade with particle identification

Abstract

CUPID, the CUORE Upgrade with Particle Identification, is a next-generation experiment to search for neutrinoless double beta decay (0νββ) and other rare events using enriched Li2100MoO4 scintillating bolometers. It will be hosted by the CUORE cryostat located at the Laboratori Nazionali del Gran Sasso in Italy. The main physics goal of CUPID is to search for 0νββ of 100Mo with a discovery sensitivity covering the full neutrino mass regime in the inverted ordering scenario, as well as the portion of the normal ordering regime with lightest neutrino mass larger than 10 meV. With a conservative background index of 10-4 cts/(keV·kg·yr), 240 kg isotope mass, 5 keV FWHM energy resolution at 3 MeV and 10 live-years of data taking, CUPID will have a 90% C.L. half-life exclusion sensitivity of 1.8·1027 yr, corresponding to an effective Majorana neutrino mass (mββ) sensitivity of 9–15 meV, and a 3σ discovery sensitivity of 1·1027 yr, corresponding to an mββ range of 12–21 meV.