Precise half-life values for two neutrino double beta decay

Abstract

All existing "positive" results on two neutrino double beta decay in different nuclei were analyzed. Using the procedure recommended by the Particle Data Group, weighted average values for half-lives of ${}^{48}$Ca, ${}^{76}$Ge, ${}^{82}$Se, ${}^{96}$Zr, ${}^{100}$Mo, ${}^{100}$Mo - ${}^{100}$Ru ($0_1^{+}$), ${}^{116}$Cd, ${}^{130}$Te, ${}^{150}$Nd, ${}^{150}$Nd - ${}^{150}$Sm($0_1^{+}$) and ${}^{238}$U were obtained. Existing geochemical data were analyzed and recommended values for half-lives of ${}^{128}$Te, ${}^{130}$Te and ${}^{130}$Ba are proposed. Given the measured half-life values, nuclear matrix elements were calculated. I recommend the use of these results as the most currently reliable values for the half-lives and nuclear matrix elements.

17 pages, 2 tables

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Cited by in corpus (4)

• Two-neutrino double beta decay of deformed nuclei within QRPA with realistic interaction
• Double Beta Decay: Historical Review of 75 Years of Research
• Neutrinoless double beta decay of ${}^{150}$Nd with account for deformation
• Origin of a sensitive dependence of calculated $\beta \beta$-decay amplitudes on the particle-particle residual interaction