论文标题
与Cuore的2美元
Measurement of the 2$νββ$ Decay Half-life of $^{130}$Te with CUORE
论文作者
论文摘要
我们使用Cuore检测器累积的300.7 kg $ \ cdot $ yr的曝光度测量了$^{130} $ te的两次beta双β衰减。使用贝叶斯分析将模拟光谱拟合到实验数据中,可以将所有主要背景源拆开,并精确地衡量两中性贡献。半衰期与过去的测量结果一致,并具有强烈降低的不确定性:$ t^{2ν} _ {1/2} = 7.71^{+0.08} _ { - 0.06} \ Mathrm {(stat。)}}^{+0.12} _ { - 0.15} \ Mathrm {(syst。该测量是$^{130} $ TE 2 $νββ$衰减半衰期的最精确的确定。
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: $T^{2ν}_{1/2} = 7.71^{+0.08}_{-0.06}\mathrm{(stat.)}^{+0.12}_{-0.15}\mathrm{(syst.)}\times10^{20}$ yr. This measurement is the most precise determination of the $^{130}$Te 2$νββ$ decay half-life to date.