Systematic analysis of double-beta decay half lives

Evaluated 2 & beta;-(2v) half-lives and their systematics were reexamined in the framework of a phenomeno-logical approach. Decay rate dependence on nuclear deformation, decay energy, shape coexistence, and forbidden transitions was observed. The following analysis showed distinct impacts of decay energy on half lives, and deformation parameters on effective nuclear matrix elements. These findings were used to predict T1/2 for 36 isotopes of interest. Present work results were compared with published data. Published by Elsevier B.V.