학술논문
Measurement of the 2νββ Decay Half-Life of Te130 with CUORE
Document Type
article
Author
Adams, DQ; Alduino, C; Alfonso, K; Avignone, FT; 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, XG; Capelli, S; Cappelli, L; Cardani, L; Carniti, P; Casali, N; Chiesa, D; Clemenza, M; Copello, S; Cosmelli, C; Cremonesi, O; Creswick, RJ; D’Addabbo, A; Dafinei, I; Davis, CJ; Dell’Oro, S; Di Domizio, S; Dompè, V; Fang, DQ; Fantini, G; Faverzani, M; Ferri, E; Ferroni, F; Fiorini, E; Franceschi, MA; Freedman, SJ; Fu, SH; Fujikawa, BK; Giachero, A; Gironi, L; Giuliani, A; Gorla, P; Gotti, C; Gutierrez, TD; Han, K; Heeger, KM; Huang, RG; Huang, HZ; Johnston, J; Keppel, G; Kolomensky, Yu G; Ligi, C; Ma, L; G., Y; Marini, L; Maruyama, RH; Mayer, D; Mei, Y; Moggi, N; Morganti, S; Napolitano, T; Nastasi, M; Nikkel, J; Nones, C; Norman, EB; Nucciotti, A; Nutini, I; O’Donnell, T; Ouellet, JL; Pagan, S; Pagliarone, CE; 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, ND; Sharma, V; Singh, V; Sisti, M; Speller, D; Surukuchi, PT; Taffarello, L
Source
Physical Review Letters. 126(17)
Subject
Language
Abstract
We measured two-neutrino double beta decay of ^{130}Te using an exposure of 300.7 kg 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_{1/2}^{2ν}=7.71_{-0.06}^{+0.08}(stat)_{-0.15}^{+0.12}(syst)×10^{20} yr. This measurement is the most precise determination of the ^{130}Te 2νββ decay half-life to date.