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arXiv · 1504.02454

Search for Neutrinoless Double-Beta Decay of $^{130}$Te with CUORE-0

K. Alfonso·D. R. Artusa·F. T. Avignone III·O. Azzolini·M. Balata·T. I. Banks·G. Bari·J. W. Beeman·F. Bellini·A. Bersani·M. Biassoni·C. Brofferio·C. Bucci·A. Caminata·L. Canonica·X. G. Cao·S. Capelli·L. Cappelli·L. Carbone·L. Cardani·N. Casali·L. Cassina·D. Chiesa·N. Chott·M. Clemenza·S. Copello·C. Cosmelli·O. Cremonesi·R. J. Creswick·J. S. Cushman·I. Dafinei·A. Dally·S. Dell'Oro·M. M. Deninno·S. DiDomizio·M. L. DiVacri·A. Drobizhev·L. Ejzak·D. Q. Fang·M. Faverzani·G. Fernandes·E. Ferri·F. Ferroni·E. Fiorini·S. J. Freedman·B. K. Fujikawa·A. Giachero·L. Gironi·A. Giuliani·P. Gorla·C. Gotti·T. D. Gutierrez·E. E. Haller·K. Han·E. Hansen·K. M. Heeger·R. Hennings-Yeomans·K. P. Hickerson·H. Z. Huang·R. Kadel·G. Keppel·Yu. G. Kolomensky·K. E. Lim·X. Liu·Y. G. Ma·M. Maino·M. Martinez·R. H. Maruyama·Y. Mei·N. Moggi·S. Morganti·S. Nisi·C. Nones·E. B. Norman·A. Nucciotti·T. O'Donnell·F. Orio·D. Orlandi·J. L. Ouellet·C. E. Pagliarone·M. Pallavicini·V. Palmieri·L. Pattavina·M. Pavan·M. Pedretti·G. Pessina·V. Pettinacci·G. Piperno·S. Pirro·S. Pozzi·E. Previtali·C. Rosenfeld·C. Rusconi·E. Sala·S. Sangiorgio·D. Santone·N. D. Scielzo·M. Sisti·A. R. Smith·L. Taffarello
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Abstract

We report the results of a search for neutrinoless double-beta decay in a 9.8~kg$\cdot$yr exposure of $^{130}$Te using a bolometric detector array, CUORE-0. The characteristic detector energy resolution and background level in the region of interest are $5.1\pm 0.3{\rm~keV}$ FWHM and $0.058 \pm 0.004\,(\mathrm{stat.})\pm 0.002\,(\mathrm{syst.})$~counts/(keV$\cdot$kg$\cdot$yr), respectively. The median 90%~C.L. lower-limit sensitivity of the experiment is $2.9\times 10^{24}~{\rm yr}$ and surpasses the sensitivity of previous searches. We find no evidence for neutrinoless double-beta decay of $^{130}$Te and place a Bayesian lower bound on the decay half-life, $T^{0\nu}_{1/2}>$~$ 2.7\times 10^{24}~{\rm yr}$ at 90%~C.L. Combining CUORE-0 data with the 19.75~kg$\cdot$yr exposure of $^{130}$Te from the Cuoricino experiment we obtain $T^{0\nu}_{1/2} > 4.0\times 10^{24}~\mathrm{yr}$ at 90%~C.L.~(Bayesian), the most stringent limit to date on this half-life. Using a range of nuclear matrix element estimates we interpret this as a limit on the effective Majorana neutrino mass, $m_{\beta\beta}< 270$ -- $760~\mathrm{meV}$.

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K. Alfonso, D. R. Artusa, F. T. Avignone III, O. Azzolini, M. Balata, T. I. Banks, G. Bari, J. W. Beeman, F. Bellini, A. Bersani, M. Biassoni, C. Brofferio, C. Bucci, A. Caminata, L. Canonica, X. G. Cao, S. Capelli, L. Cappelli, L. Carbone, L. Cardani, N. Casali, L. Cassina, D. Chiesa, N. Chott, M. Clemenza, S. Copello, C. Cosmelli, O. Cremonesi, R. J. Creswick, J. S. Cushman, I. Dafinei, A. Dally, S. Dell'Oro, M. M. Deninno, S. DiDomizio, M. L. DiVacri, A. Drobizhev, L. Ejzak, D. Q. Fang, M. Faverzani, G. Fernandes, E. Ferri, F. Ferroni, E. Fiorini, S. J. Freedman, B. K. Fujikawa, A. Giachero, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, T. D. Gutierrez, E. E. Haller, K. Han, E. Hansen, K. M. Heeger, R. Hennings-Yeomans, K. P. Hickerson, H. Z. Huang, R. Kadel, G. Keppel, Yu. G. Kolomensky, K. E. Lim, X. Liu, Y. G. Ma, M. Maino, M. Martinez, R. H. Maruyama, Y. Mei, N. Moggi, S. Morganti, S. Nisi, C. Nones, E. B. Norman, A. Nucciotti, T. O'Donnell, F. Orio, D. Orlandi, J. L. Ouellet, C. E. Pagliarone, M. Pallavicini, V. Palmieri, L. Pattavina, M. Pavan, M. Pedretti, G. Pessina, V. Pettinacci, G. Piperno, S. Pirro, S. Pozzi, E. Previtali, C. Rosenfeld, C. Rusconi, E. Sala, S. Sangiorgio, D. Santone, N. D. Scielzo, M. Sisti, A. R. Smith, L. Taffarello. 2015-04-09. Search for Neutrinoless Double-Beta Decay of $^{130}$Te with CUORE-0. https://doi.org/10.1103/physrevlett.115.102502

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