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CUORE-0 results and prospects for the CUORE experiment

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arxiv 1502.02576 v1 pith:VQKA6DP3 submitted 2015-02-09 physics.ins-det hep-ex

CUORE-0 results and prospects for the CUORE experiment

CUORE Collaboration: D.R. Artusa , F.T. Avignone III , O. Azzolini , M. Balata , T.I. Banks , G. Bari , J. Beeman , F. Bellini
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A. Bersani M. Biassoni C. Brofferio C. Bucci X.Z. Cai A. Camacho A. Caminata L. Canonica X. 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 V. Datskov S. Dell'Oro M. Deninno S. Di Domizio M.L. di Vacri A. Drobizhev L. Ejzak D. Q. Fang H. A. Farach M. Faverzani G. Fernandes E. Ferri F. Ferroni E. Fiorini M.A. Franceschi S.J. Freedman B. K. Fujikawa A. Giachero L. Gironi A. Giuliani P. Gorla C. Gotti T.D. Gutierrez E.E. Haller K. Han K.M. Heeger R. Hennings-Yeomans K.P. Hickerson H.Z. Huang R. Kadel K. Kazkaz G. Keppel Yu.G. Kolomensky Y.L. Li C. Ligi K.E. Lim X. Liu Y.G. Ma C. Maiano M. Maino M. Martinez R.H. Maruyama Y. Mei N. Moggi S. Morganti T. Napolitano M. Nastasi 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 C. Pira S. Pirro S. Pozzi E. Previtali V. Rampazzo C. Rosenfeld C. Rusconi E. Sala S. Sangiorgio N.D. Scielzo M. Sisti A.R. Smith L. Taffarello M. Tenconi F. Terranova W.D. Tian C. Tomei S. Trentalange G. Ventura M. Vignati B.S. Wang H.W. Wang L. Wielgus J. Wilson L.A. Winslow T. Wise A. Woodcraft L. Zanotti C. Zarra G.Q. Zhang B.X. Zhu S. Zucchelli
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classification physics.ins-det hep-ex
keywords cuoresensitivityexperimentbetacuore-0decaydoubleneutrinoless
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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With 741 kg of TeO2 crystals and an excellent energy resolution of 5 keV (0.2%) at the region of interest, the CUORE (Cryogenic Underground Observatory for Rare Events) experiment aims at searching for neutrinoless double beta decay of 130Te with unprecedented sensitivity. Expected to start data taking in 2015, CUORE is currently in an advanced construction phase at LNGS. CUORE projected neutrinoless double beta decay half-life sensitivity is 1.6E26 y at 1 sigma (9.5E25 y at the 90% confidence level), in five years of live time, corresponding to an upper limit on the effective Majorana mass in the range 40-100 meV (50-130 meV). Further background rejection with auxiliary bolometric detectors could improve CUORE sensitivity and competitiveness of bolometric detectors towards a full analysis of the inverted neutrino mass hierarchy. CUORE-0 was built to test and demonstrate the performance of the upcoming CUORE experiment. It consists of a single CUORE tower (52 TeO2 bolometers of 750 g each, arranged in a 13 floor structure) constructed strictly following CUORE recipes both for materials and assembly procedures. An experiment its own, CUORE-0 is expected to reach a sensitivity to the neutrinoless double beta decay half-life of 130Te around 3E24 y in one year of live time. We present an update of the data, corresponding to an exposure of 18.1 kg y. An analysis of the background indicates that the CUORE performance goal is satisfied while the sensitivity goal is within reach.

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