Advances in High Energy Physics

Review Article

Neutrinoless Double Beta Decay: 2015 Review

Table 10

Sensitivity and exposure necessary to discriminate between and : the goal is  meV. The two cases refer to the unquenched value of (mega) and (ultimate). The calculations are performed assuming zero background experiments with detection efficiency and no fiducial volume cuts. The last column shows the maximum value of the product in order to actually comply with the zero background condition.
ExperimentIsotope [yr]Exposure (estimate)
[ton⋅yr] [counts kg−1 yr−1]
mega Ge 76Ge 3.0 ⋅ 10285.5 1.8 ⋅ 10−4
mega Te 130Te 8.1 ⋅ 10272.5 4.0 ⋅ 10−4
mega Xe 136Xe 1.2 ⋅ 10283.8 2.7 ⋅ 10−4
ultimate Ge 76Ge 6.9 ⋅ 1029125 8.0 ⋅ 10−6
ultimate Te 130Te 2.7 ⋅ 102984 1.2 ⋅ 10−5
ultimate Xe 136Xe 4.0 ⋅ 1029130 7.7 ⋅ 10−6