Measurement of the $2\nu \beta \beta$ Decay Half-Life of ${}^{130}\mathrm{Te}$ with CUORE

Journal Article · Tue Apr 27 00:00:00 EDT 2021 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.126.171801· OSTI ID:1780497

Adams, D. Q.; Alduino, C.; Alfonso, K.; Avignone, F. T.; Azzolini, O.; Bari, G.; Bellini, F.; Benato, G.; Biassoni, M.; Branca, A.; Brofferio, C.; Bucci, C.; Camilleri, J.; Caminata, A.; Campani, A.; Canonica, L.; Cao, X. G.; Capelli, S.; Cappelli, L.; Cardani, L. ; Carniti, P.; Casali, N.; Chiesa, D.; Clemenza, M.; Copello, S.; Cosmelli, C.; Cremonesi, O.; Creswick, R. J.; D’Addabbo, A.; Dafinei, I.; Davis, C. J.; Dell’Oro, S.; Di Domizio, S.; Dompè, V.; Fang, D. Q.; Fantini, G.; Faverzani, M.; Ferri, E.; Ferroni, F.; Fiorini, E.; Franceschi, M. A.; Freedman, S. J.; Fu, S. H.; Fujikawa, B. K.; Giachero, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Gutierrez, T. D.; Han, K.; Heeger, K. M.; Huang, R. G.; Huang, H. Z.; Johnston, J.; Keppel, G.; Kolomensky, Yu. G.; Ligi, C.; Ma, L.; Ma, Y. G.; Marini, L.; Maruyama, R. H.; Mayer, D.; Mei, Y.; Moggi, N.; Morganti, S.; Napolitano, T.; Nastasi, M.; Nikkel, J.; Nones, C.; Norman, E. B.; Nucciotti, A.; Nutini, I.; O’Donnell, T.; Ouellet, J. L.; Pagan, S.; Pagliarone, C. E.; Pagnanini, L.; Pallavicini, M.; Pattavina, L.; Pavan, M.; Pessina, G.; Pettinacci, V.; Pira, C.; Pirro, S.; Pozzi, S.; Previtali, E.; Puiu, A.; Rosenfeld, C.; Rusconi, C.; Sakai, M.; Sangiorgio, S.; Schmidt, B.; Scielzo, N. D.; Sharma, V.; Singh, V.; Sisti, M.; Speller, D.; Surukuchi, P. T.; Taffarello, L.; Terranova, F.; Tomei, C.; Vetter, K. J.; Vignati, M.; Wagaarachchi, S. L.; Wang, B. S.; Welliver, B.; Wilson, J.; Wilson, K.; Winslow, L. A.; Zimmermann, S.; Zucchelli, S.

We measured two-neutrino double beta decay of $$^{130}$$Te using an exposure of 300.7 kg$$\cdot$$yr accumulated with the CUORE detector. Using a Bayesian analysis to fit simulated spectra to experimental data, it was possible to disentangle all the major background sources and precisely measure the two-neutrino contribution. The half-life is in agreement with past measurements with a strongly reduced uncertainty: $$T^{2\nu}_{1/2} = 7.71^{+0.08}_{-0.06}\mathrm{(stat.)}^{+0.12}_{-0.15}\mathrm{(syst.)}\times10^{20}$$ yr. This measurement is the most precise determination of the $$^{130}$$Te 2$$\nu\beta\beta$$ decay half-life to date.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• Contributing Organization: CUORE Collaboration
• Grant/Contract Number: AC02-05CH11231; AC52-07NA27344; FG02-08ER41551; FG03-00ER41138; SC0012654; SC0020423; SC0019316
• OSTI ID: 1780497
• Alternate ID(s): OSTI ID: 1762251; OSTI ID: 1821281
• Report Number(s): LLNL-JRNL-826695; PRLTAO; 171801
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Vol. 126 Journal Issue: 17; ISSN 0031-9007
• Publisher: American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Double beta decay
Lifetimes & widths
Neutrinoless double beta decay
Nuclear structure & decays
Neutrinos
Calorimeters