New Results in the search for 0 νββ decay in 100Mo from CUPID-Mo
Abstract
CUPID-Mo is a demonstrator experiment for CUPID (CUORE Upgrade with Particle ID), the planned next-generation upgrade of the first ton scale cryogenic bolometric 0 νββ decay experiment, CUORE (Cryogenic Underground Observatory for Rare Events). CUPID-Mo was operated at Laboratoire Souterrain de Modane in France as an array of 20 enriched Li2100MoO4 (LMO) cylindrical crystals (~200g each), with each LMO featuring a Ge light detector (LD). The LMOs and LDs were operated at ~20 mK and instrumented with NTD sensors allowing for the collection of both heat and scintillation light. This dual mode of energy collection allows for α events to be distinguished from β/ γ events, significantly reducing the background from degraded αs in the heat channel. With a demonstrated bolometric energy resolution of ~7 keV (FWHM) at 2615 keV, complete discrimination of α's from β/ γ's and very low radioactive contamination, CUPID-Mo is in the background-free regime. Here we present the current leading results of CUPID-Mo with an exposure of over 2 kg-years for the 0 νββ decay of 100Mo. In this talk we present the analysis for this result, the current limit and the status of ongoing CUPID-Mo analyses.
- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- 2020
- Bibcode:
- 2020APS..DNP.LM003W