Measurement of the Two-Neutrino Double Beta Decay Half-life of ${}^{130}$Te with the CUORE-0 Experiment

Abstract

We report on the measurement of the two-neutrino double beta decay half-life of ${}^{130}$Te with the CUORE-0 detector. From an exposure of 33.4 kg$\cdot$y of TeO${}_2$, the half-life is determined to be $T_{1/2}^{2\hat{I}½}$ = [8.2 $\pm$ 0.2 (stat.) $\pm$ 0.6 (syst.)] $\times$ 10${}^{20}$y. This result is obtained after a detailed reconstruction of the sources responsible for the CUORE-0 counting rate, with a specific study of those contributing to the ${}^{130}$Te neutrinoless double beta decay region of interest.

Corrected typo in section 9: 3.43E5 Bq/kg should have read 3.43E-5 Bq/kg