CUORE-0 results and prospects for the CUORE experiment
Abstract
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.
Keywords
Cite
@article{arxiv.1502.02576,
title = {CUORE-0 results and prospects for the CUORE experiment},
author = {CUORE Collaboration and D. R. Artusa and F. T. Avignone and O. Azzolini and M. Balata and T. I. Banks and G. Bari and J. Beeman and F. Bellini and A. Bersani and M. Biassoni and C. Brofferio and C. Bucci and X. Z. Cai and A. Camacho and A. Caminata and L. Canonica and X. Cao and S. Capelli and L. Cappelli and L. Carbone and L. Cardani and N. Casali and L. Cassina and D. Chiesa and N. Chott and M. Clemenza and S. Copello and C. Cosmelli and O. Cremonesi and R. J. Creswick and J. S. Cushman and I. Dafinei and A. Dally and V. Datskov and S. Dell'Oro and M. Deninno and S. Di Domizio and M. L. di Vacri and A. Drobizhev and L. Ejzak and D. Q. Fang and H. A. Farach and M. Faverzani and G. Fernandes and E. Ferri and F. Ferroni and E. Fiorini and M. A. Franceschi and S. J. Freedman and B. K. Fujikawa and A. Giachero and L. Gironi and A. Giuliani and P. Gorla and C. Gotti and T. D. Gutierrez and E. E. Haller and K. Han and K. M. Heeger and R. Hennings-Yeomans and K. P. Hickerson and H. Z. Huang and R. Kadel and K. Kazkaz and G. Keppel and Yu. G. Kolomensky and Y. L. Li and C. Ligi and K. E. Lim and X. Liu and Y. G. Ma and C. Maiano and M. Maino and M. Martinez and R. H. Maruyama and Y. Mei and N. Moggi and S. Morganti and T. Napolitano and M. Nastasi and S. Nisi and C. Nones and E. B. Norman and A. Nucciotti and T. O'Donnell and F. Orio and D. Orlandi and J. L. Ouellet and C. E. Pagliarone and M. Pallavicini and V. Palmieri and L. Pattavina and M. Pavan and M. Pedretti and G. Pessina and V. Pettinacci and G. Piperno and C. Pira and S. Pirro and S. Pozzi and E. Previtali and V. Rampazzo and C. Rosenfeld and C. Rusconi and E. Sala and S. Sangiorgio and N. D. Scielzo and M. Sisti and A. R. Smith and L. Taffarello and M. Tenconi and F. Terranova and W. D. Tian and C. Tomei and S. Trentalange and G. Ventura and M. Vignati and B. S. Wang and H. W. Wang and L. Wielgus and J. Wilson and L. A. Winslow and T. Wise and A. Woodcraft and L. Zanotti and C. Zarra and G. Q. Zhang and B. X. Zhu and S. Zucchelli},
journal= {arXiv preprint arXiv:1502.02576},
year = {2015}
}
Comments
10 pages, 3 figures, to appear in the proceedings of NEUTRINO 2014, 26th International Conference on Neutrino Physics and Astrophysics, 2-7 June 2014, held at Boston, Massachusetts, USA