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 (13)

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• Nuclear matrix elements for double-β decay
• $0\nu \beta \beta$ and $2\nu \beta \beta$ nuclear matrix elements, QRPA, and isospin symmetry restoration
• Two-neutrino double beta decay of deformed nuclei within QRPA with realistic interaction
• Recent Progress in Double Beta Decay
• Phase space factors for ${\beta }^{+}{\beta }^{+}$ decay and competing modes of double-$\beta$ decay
• Double Beta Decay: Historical Review of 75 Years of Research
• Random coincidence of $2\nu 2\beta$ decay events as a background source in bolometric $0\nu 2\beta$ decay experiments
• Measurement of the half-life of the two-neutrino double beta decay of Ge-76 with the Gerda experiment
• Shell model analysis of competing mechanism to the double-beta decay of ${}^{48}$Ca
• 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
• Deformation effects on the Gamow-Teller strength distributions in the double-beta decay partners 76Ge and 76Se