2017-10-20 Search for Neutrinoless β+EC Decay of Te-120 with CUORE-0
Search for Neutrinoless β+EC Decay of Te-120 with CUORE-0
We have performed a search for neutrinoless β+EC decay of 120Te using the final CUORE-0 data release. We describe a new analysis method for the simultaneous fit of signatures with different event topology, and of data subsets with different signal efficiency, obtaining a limit on the half-life of the decay of T1/2 > 1.6 × 1021 yr at 90% CI. Combining this with results from Cuoricino, a predecessor experiment, we obtain the strongest limit to date, corresponding to T1/2 > 2.7 × 1021 yr at 90% CI.