The NEMO-3 and SuperNEMO experiments search for neutrinoless double beta decay (0νββ). Detection of 0νββ decay would provide direct evidence that neutrinos are Majorana particles and lepton number is not conserved. In these experiments, the isotopes of interest are separated from the active detector region, allowing for reconstruction of the full event topology. This aids in background suppression and discrimination between underlying 0νββ decay mechanisms. The NEMO-3 experiment investigated a total of seven 0νββ decay isotopes. The SuperNEMO experiment builds upon the design of NEMO-3. Upgrades to the detector technologies and radiopurity, as well as an increase in isotope mass will allow SuperNEMO to improve 0νββ half-life sensitivities by two orders of magnitude. The latest result from NEMO-3 is summarized, and an overview of the progress in the construction of the SuperNEMO demonstrator module is presented.
The NEMO-3 experiment operated from 2003 to 2011 with the goal of searching for neutrinoless double-beta decay. By separating the source and detector components and employing a combination of tracking and calorimetric elements, the experiment was able to capitalize on its unique approach to produce many unique physics measurements across a variety of different double-beta decay isotopes. These proceedings give the latests results from the NEMO-3 experiment including both new double-beta decay results from different isotopes and upcoming analyses beyond double-beta decay which illustrate the power and versatility of the NEMO technique.
The NEMO-3 experiment searched for neutrinoless double-beta decay over the course of more than seven years utilizing various different candidate isotopes. Due to its multi-observable design it was able to isolate, with high fidelity, a very pure set of double-beta decay events with a signalto-background ratio of 76. Capitalizing on these two advantages, a search for time-dependent periodic variations in NEMO-3 nuclear decay rates is presented.
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