Precise Half-Life Values for Two-Neutrino Double-$\beta$ Decay: 2020 review

Abstract

All existing positive results on two-neutrino double beta decay and two-neutrino double electron capture in different nuclei have been analyzed. Weighted average and recommended half-life values for ${}^{48}$Ca, ${}^{76}$Ge, ${}^{82}$Se, ${}^{96}$Zr, ${}^{100}$Mo, ${}^{100}$Mo - ${}^{100}$Ru ($0_1^{+}$), ${}^{116}$Cd, ${}^{128}$Te, ${}^{130}$Te, ${}^{136}$Xe, ${}^{150}$Nd, ${}^{150}$Nd - ${}^{150}$Sm ($0_1^{+}$), ${}^{238}$U, ${}^{78}$Kr, ${}^{124}$Xe and ${}^{130}$Ba have been obtained. Given the measured half-life values, effective nuclear matrix elements for all these transitions were calculated.

17 pages. arXiv admin note: text overlap with arXiv:1501.05133

Cited by in corpus (1)

• The first large-scale shell-model calculation of the two-neutrino double beta decay of ${}^{76}$Ge to the excited states in ${}^{76}$Se