We have performed a search for neutrinoless β+EC decay of Te120 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% credibility interval (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.
Search for neutrinoless β+ EC decay of Te 120 with CUORE-0 / Alduino, C., Alfonso, K., Artusa, D.R., Avignone, F.T., Azzolini, O., Bari, G., Bellini, F., Benato, G., Bersani, A., Biassoni, M., Branca, A., Brofferio, C., Bucci, C., Camacho, A., Caminata, A., Canonica, L., Cao, X.G., Capelli, S., Cappelli, L., Cardani, L., et al.. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - ELETTRONICO. - 97:5(2018), p. 055502. [10.1103/PhysRevC.97.055502]
Search for neutrinoless β+ EC decay of Te 120 with CUORE-0
Bellini, F.;Cardani, L.;Casali, N.;Cosmelli, C.;Dafinei, I.;Ferroni, F.;Martinez, M.;Tomei, C.;Vignati, M.;
2018
Abstract
We have performed a search for neutrinoless β+EC decay of Te120 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% credibility interval (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.| File | Dimensione | Formato | |
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