1108.4313 (E. Andreotti et al.)

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

E. Andreotti, C. Arnaboldi, F. T. Avignone III, M. Balata, I. Bandac, M. Barucci, J. W. Beeman, F. Bellini, C. Brofferio, A. Bryant, C. Bucci, L. Canonica, S. Capelli, L. Carbone, M. Carrettoni, M. Clemenza, O. Cremonesi, R. J. Creswick, S. Di Domizio, M. J. Dolinski, L. Ejzak, R. Faccini, H. A. Farach, E. Ferri, E. Fiorini, L. Foggetta, A. Giachero, L. Gironi, A. Giuliani, P. Gorla, E. Guardincerri, T. D. Gutierrez, E. E. Haller, K. Kazkaz, L. Kogler, S. Kraft, C. Maiano, C. Martinez, M. Martinez, R. H. Maruyama, S. Newman, S. Nisi, C. Nones, E. B. Norman, A. Nucciotti, F. Orio, M. Pallavicini, V. Palmieri, L. Pattavina, M. Pavan, M. Pedretti, G. Pessina, S. Pirro, E. Previtali, L. Risegari, C. Rosenfeld, C. Rusconi, C. Salvioni, S. Sangiorgio, D. Schaeffer, N. D. Scielzo, M. Sisti, A. R. Smith, C. Tomei, G. Ventura, M. Vignati

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=$9.5\times10^{25}\,$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% C.L.), and
$T^{0\nu}_{1/2}(^{130} Te\rightarrow^{130} Xe^{*})>9.4\times10^{23}\,$y (90%
C.L.).

View original: http://arxiv.org/abs/1108.4313