With or without \(\nu\)? Hunting for the seed of the matter-antimatter asymmetry

• Published in: arXiv.org 2024-04
• Main Authors: Collaboration, CUORE, Adams, D Q, Alduino, C, Alfonso, K, Avignone, F T, Azzolini, O, Bari, G, Bellini, F, Benato, G, Brofferio, C, Bucci, C, Caminata, A, Campani, A, Cao, J, Capelli, S, Capelli, C, Cappelli, L, Cardani, L, Carniti, P, Casali, N, Chiesa, D, Clemenza, M, Cremonesi, O, Creswick, R J, D'Addabbo, A, Dafinei, I, F Del Corso, Dell'Oro, S, S Di Lorenzo, Dixon, T, Dompè, V, Fang, D Q, Faverzani, M, Ferri, E, Ferroni, F, Fiorini, E, Freedman, S J, Fujikawa, B K, Ghislandi, S, Giachero, A, Girola, M, Gironi, L, Giuliani, A, Gorla, P, Gotti, C, Guillaumon, P V, Gutierrez, T D, Hansen, E V, Helis, D L, Huang, H Z, Keppel, G, Kolomensky, Yu G, Liu, R, L Ma, Ma, Y G, Marini, L, Maruyama, R H, Mayer, D, Mei, Y, Moore, M N, Napolitano, T, Nastasi, M, Nones, C, Nucciotti, A, Nutini, I, O'Donnell, T, Olmi, M, Oregui, B T, Ouellet, J L, Pagan, S, Pagliarone, C E, Pagnanini, L, Pallavicini, M, Pattavina, L, Pavan, M, Pessina, G, Pettinacci, V, Pirro, S, Ponce, I, Pottebaum, E G, Pozzi, S, Previtali, E, Puiu, A, Ressa, A, Rosenfeld, C, Schmidt, B, Singh, V, Sisti, M, Speller, D, Taffarello, L, Tomei, C, Torres, J A, Vetter, K J, Vignati, M, Wagaarachchi, S L, Wilson, J, Wilson, K, Winslow, L A, Zimmermann, S, Zucchelli, S
• Format: Article
• Language: English
• Subjects: Antimatter; Asymmetry; Beta decay; Neutrinos; Particle decay; Particle physics
• ISSN: 2331-8422

The matter-antimatter asymmetry underlines the incompleteness of the current understanding of particle physics. Neutrinoless double-beta (\(0\nu \beta\beta\)) decay may help explain this asymmetry, while unveiling the Majorana nature of the neutrino. The CUORE experiment searches for \(0\nu \beta\beta\) decay of \(^{130}\)Te using a tonne-scale cryogenic calorimeter operated at milli-kelvin temperatures. We report no evidence for \(0\nu \beta\beta\) decay and place a lower limit on the half-life of T\(_{1/2}\) \(>\) 3.8 \(\times\) 10\(^{25}\) years (90% C.I.) with over 2 tonne\(\cdot\)year TeO\(_2\) exposure. The tools and techniques developed for this result and the 5 year stable operation of nearly 1000 detectors demonstrate the infrastructure for a next-generation experiment capable of searching for \(0\nu \beta\beta\) decay across multiple isotopes.