Double-beta decay of ${}^{130}$Te to the first 0${}^{+}$ excited state of ${}^{130}$Xe with CUORICINO

Abstract

The CUORICINO experiment was an array of 62 TeO${}_2$ single-crystal bolometers with a total ${}^{130}$Te mass of $11.3$kg. The experiment finished in 2008 after more than 3 years of active operating time. Searches for both $0\nu$ and $2\nu$ double-beta decay to the first excited $0^{+}$ state in ${}^{130}$Xe were performed by studying different coincidence scenarios. The analysis was based on data representing a total exposure of N(${}^{130}$Te)$\cdot$t=$9.5\times 10^{25}$y. No evidence for a signal was found. The resulting lower limits on the half lives are $T_{1/2}^{2\nu }{(}^{130}Te{\to }^{130}X{e}^{\ast })>1.3\times 10^{23}$y (90% C.L.), and $T_{1/2}^{0\nu }{(}^{130}Te{\to }^{130}X{e}^{\ast })>9.4\times 10^{23}$y (90% C.L.).

arXiv comment6 pages, 4 figures

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• Double Beta Decay to the Excited States: Review
• Constrained Neutrino Mass Matrix and Majorana Phases
• Two-neutrino $\beta \beta$ decay of ${}^{136}$Xe to the first excited $0^{+}$ state in ${}^{136}$Ba
• New limit for the half-life of double beta decay of ${}^{94}$Zr to the first excited state of ${}^{94}$Mo