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arXiv · 1710.07459

Search for Neutrinoless $\beta^{+}\hspace{-0.2em}EC$ Decay of $^{120}$Te with CUORE-0

CUORE Collaboration·C. Alduino·K. Alfonso·D. R. Artusa·F. T. Avignone III·O. Azzolini·G. Bari·F. Bellini·G. Benato·A. Bersani·M. Biassoni·A. Branca·C. Brofferio·C. Bucci·A. Camacho·A. Caminata·L. Canonica·X. G. Cao·S. Capelli·L. Cappelli·L. Cardani·P. Carniti·N. Casali·L. Cassina·D. Chiesa·N. Chott·M. Clemenza·S. Copello·C. Cosmelli·O. Cremonesi·R. J. Creswick·J. S. Cushman·A. D'Addabbo·D. D'Aguanno·I. Dafinei·C. J. Davis·S. Dell'Oro·M. M. Deninno·S. Di Domizio·M. L. Di Vacri·A. Drobizhev·D. Q. Fang·M. Faverzani·E. Ferri·F. Ferroni·E. Fiorini·M. A. Franceschi·S. J. Freedman·B. K. Fujikawa·A. Giachero·L. Gironi·A. Giuliani·L. Gladstone·P. Gorla·C. Gotti·T. D. Gutierrez·K. Han·K. M. Heeger·R. Hennings-Yeomans·H. Z. Huang·G. Keppel·Yu. G. Kolomensky·A. Leder·C. Ligi·K. E. Lim·Y. G. Ma·L. Marini·M. Martinez·R. H. Maruyama·Y. Mei·N. Moggi·S. Morganti·P. J. Mosteiro·S. S. Nagorny·T. Napolitano·M. Nastasi·C. Nones·E. B. Norman·V. Novati·A. Nucciotti·T. O'Donnell·J. L. Ouellet·C. E. Pagliarone·M. Pallavicini·V. Palmieri·L. Pattavina·M. Pavan·G. Pessina·C. Pira·S. Pirro·S. Pozzi·E. Previtali·C. Rosenfeld·C. Rusconi·M. Sakai·S. Sangiorgio·D. Santone·B. Schmidt·J. Schmidt·N. D. Scielzo
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Abstract

We have performed a search for neutrinoless $\beta^{+}\hspace{-0.2em}EC$ decay of $^{120}$Te using the final CUORE-0 data release. We describe a new analysis method for the simultaneous fit of signatures with different event topology, and of data subsets with different signal efficiency, obtaining a limit on the half-life of the decay of $T_{1/2}>1.6\cdot10^{21}$ yr at $90\%$ CI. Combining this with results from Cuoricino, a predecessor experiment, we obtain the strongest limit to date, corresponding to $T_{1/2}>2.7\cdot10^{21}$ yr at $90\%$ CI.

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CUORE Collaboration, C. Alduino, K. Alfonso, D. R. Artusa, F. T. Avignone III, O. Azzolini, G. Bari, F. Bellini, G. Benato, A. Bersani, M. Biassoni, A. Branca, C. Brofferio, C. Bucci, A. Camacho, A. Caminata, L. Canonica, X. G. Cao, S. Capelli, L. Cappelli, L. Cardani, P. Carniti, N. Casali, L. Cassina, D. Chiesa, N. Chott, M. Clemenza, S. Copello, C. Cosmelli, O. Cremonesi, R. J. Creswick, J. S. Cushman, A. D'Addabbo, D. D'Aguanno, I. Dafinei, C. J. Davis, S. Dell'Oro, M. M. Deninno, S. Di Domizio, M. L. Di Vacri, A. Drobizhev, D. Q. Fang, M. Faverzani, E. Ferri, F. Ferroni, E. Fiorini, M. A. Franceschi, S. J. Freedman, B. K. Fujikawa, A. Giachero, L. Gironi, A. Giuliani, L. Gladstone, P. Gorla, C. Gotti, T. D. Gutierrez, K. Han, K. M. Heeger, R. Hennings-Yeomans, H. Z. Huang, G. Keppel, Yu. G. Kolomensky, A. Leder, C. Ligi, K. E. Lim, Y. G. Ma, L. Marini, M. Martinez, R. H. Maruyama, Y. Mei, N. Moggi, S. Morganti, P. J. Mosteiro, S. S. Nagorny, T. Napolitano, M. Nastasi, C. Nones, E. B. Norman, V. Novati, A. Nucciotti, T. O'Donnell, J. L. Ouellet, C. E. Pagliarone, M. Pallavicini, V. Palmieri, L. Pattavina, M. Pavan, G. Pessina, C. Pira, S. Pirro, S. Pozzi, E. Previtali, C. Rosenfeld, C. Rusconi, M. Sakai, S. Sangiorgio, D. Santone, B. Schmidt, J. Schmidt, N. D. Scielzo. 2017-10-20. Search for Neutrinoless $\beta^{+}\hspace{-0.2em}EC$ Decay of $^{120}$Te with CUORE-0. https://doi.org/10.1103/physrevc.97.055502

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