Speaker
Description
The search for neutrinoless double beta decay (0νββ) is fundamental for investigating lepton-number violation, probing new physics beyond the Standard Model, and determining whether neutrinos are Majorana particles. CUORE, a cryogenic bolometric experiment at LNGS, studies 0νββ in 130Te using 988 TeO2 crystals. It is a milestone of cryogenic detector arrays with a tonne-scale detector operated for more than 7 years below 15 mK. Since 2017, CUORE has accumulated over 2.5 tonne-years of exposure, achieving one of the leading 0νββ limits and one of the most precise two-neutrino double beta decay (2νββ) half-life measurements thanks to a detailed background reconstruction across a broad energy range. Building on CUORE’s success, CUPID (CUORE Upgrade with Particle ID) aims to significantly enhance its 0νββ discovery sensitivity to 10 27 yr in 100 Mo, covering the Inverted Hierarchy of neutrino masses. It will employ 1596 lithium molybdate (Li 2 MoO 4 ) crystals enriched in 100 Mo, alongside 1710 light detectors with Neganov-Trofimov-Luke amplification, enabling simultaneous heat and light readout for enhanced background rejection, particularly against alpha contamination and 2νββ pileup. CUPID will reuse CUORE’s cryostat and infrastructure. Current efforts focus on detector performance validation, sensitivity studies, and finalizing the experimental design to maximize physics reach. This work presents the latest CUORE results and outlines the key milestones toward CUPID’s realization.
| Submitter Name | Stefano Dell'Oro |
|---|---|
| Submitter Email | stefano.delloro@unimib.it |
| Submitter Institution | University of Milano-Bicocca |
