Review Article

Neutrinoless Double-Beta Decay

Table 3

Signal rates for an “average” double-beta decay candidate.


(meV)
Signal rate
(counts/(y kmol))
Significance of value

300 ~70 Ge claim in the Heidelberg-Moscow experiment
50 ~2 Higher bound of the inverted hierarchy region
20 ~0.2 Lower bound of the inverted hierarchy region
3 ~7 × 10−3 Center of the direct hierarchy region