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.

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两个中微子双β衰变的精确半衰期值：2020年回顾

分析了在不同原子核中关于两个中微子双β衰变和两个中微子双电子俘获的所有现有阳性结果。的加权平均和建议的半衰期值${}^{48}$钙 ${}^{76}$哥 ${}^{82}$硒 ${}^{96}$锆 ${}^{100}$莫， ${}^{100}$莫- ${}^{100}$（（$0_{\mathrm{1个}}^{+}$）， ${}^{116}$光盘， ${}^{128}$Te， ${}^{130}$Te， ${}^{136}$薛 ${}^{150}$钕 ${}^{150}$钕- ${}^{150}$Sm（$0_{\mathrm{1个}}^{+}$）， ${}^{238}$， ${}^{78}$r ${}^{124}$Xe和 ${}^{130}$钡已获得。给定测得的半衰期值，计算出所有这些过渡的有效核基质元素。