Matter-antimatter asymmetry underlines the incompleteness of the current understanding of particle physics. Neutrinoless double-beta decay (0vββ) may help explain this asymmetry, while unveiling the Majorana nature of the neutrino. The CUORE experiment searches for 0vββ of 130Te using a tonne-scale cryogenic calorimeter operated at milli-kelvin temperatures. We report no evidence of 0vββ and place a lower limit on the half-life of T1/2 > 3.5 × 1025 years (90% C.I.) with over 2 tonne·year TeO2 exposure. The tools and techniques developed for this result and the 5 year stable operation of nearly 1000 detectors demonstrate crucial infrastructure for a future-generation experiment capable of searching for 0vββ across multiple isotopes.
Constraints on lepton number violation with the 2 tonne · year CUORE Dataset / Null, N., Adams, D.Q., Alduino, C., Alfonso, K., Avignone, F.T., Azzolini, O., Bari, G., Bellini, F., Benato, G., Beretta, M., Biassoni, M., Branca, A., Brofferio, C., Bucci, C., Camilleri, J., Caminata, A., Campani, A., Cao, J., Capelli, S., Capelli, C., et al.. - In: SCIENCE. - ISSN 0036-8075. - (2025), pp. 1-14. [10.1126/science.adp6474]
Constraints on lepton number violation with the 2 tonne · year CUORE Dataset
Bellini, F.;Giachero, A.;Vignati, M.;Wilson, J.;
2025
Abstract
Matter-antimatter asymmetry underlines the incompleteness of the current understanding of particle physics. Neutrinoless double-beta decay (0vββ) may help explain this asymmetry, while unveiling the Majorana nature of the neutrino. The CUORE experiment searches for 0vββ of 130Te using a tonne-scale cryogenic calorimeter operated at milli-kelvin temperatures. We report no evidence of 0vββ and place a lower limit on the half-life of T1/2 > 3.5 × 1025 years (90% C.I.) with over 2 tonne·year TeO2 exposure. The tools and techniques developed for this result and the 5 year stable operation of nearly 1000 detectors demonstrate crucial infrastructure for a future-generation experiment capable of searching for 0vββ across multiple isotopes.| File | Dimensione | Formato | |
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