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

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 $T^{2\nu}{1/2}(^{130} Te\rightarrow^{130} Xe^{*})>1.3\times10^{23},$y(90$T^{0\nu}{1/2}(^{130} Te\rightarrow^{130} Xe^{*})>9.4\times10^{23},$y (90% C.L.).