The low energy spectrum of TeO2 bolometers: results and dark matter perspectives for the CUORE-0 and CUORE experiments

• Published in: arXiv.org
• Main Authors: Alessandria, F, Ardito, R, Artusa, D R, Avignone, F T, Azzolini, O, Banks, T I, Bari, G, Beeman, J, Bellini, F, Bersani, A, Biassoni, M, Bloxham, T, Brofferio, C, Bucci, C, Cai, X Z, Canonica, L, Carbone, L, Cardani, L, Carrettoni, M, Casali, N, Clemenza, M, Cosmelli, C, Creswick, R J, Dafinei, I, Dally, A, Datskov, V, De Biasi, A, Decowski, M P, Deninno, M M, S Di Domizio, di Vacri, M L, Faccini, R, Fang, D Q, Farach, H A, Ferri, E, Ferroni, F, Fiorini, E, Franceschi, M A, Freedman, S J, Frossati, G, Giachero, A, Gironi, L, Giuliani, A, Goett, J J, Gorla, P, Gotti, C, Gutierrez, T D, Haller, E E, Han, K, Heeger, K M, Huang, H Z, Kadel, R, Kazkaz, K, Keppel, G, Kogler, L, Kolomensky, Yu G, Lenz, D, Li, Y L, Liu, X, Ma, Y G, Maiano, C, Maino, M, Martinez, M, Maruyama, R H, Moggi, N, Morganti, S, Newman, S, Nisi, S, Nones, C, Norman, E B, Nucciotti, A, Orio, F, Orlandi, D, Ouellet, J L, Pallavicini, M, Palmieri, V, Pattavina, L, Pavan, M, Pedretti, M, Pessina, G, Pirro, S, Rampazzo, V, Rimondi, F, Rosenfeld, C, Rusconi, C, Sangiorgio, S, Scielzo, N D, Sisti, M, Smith, A R, Taffarello, L, Trentalange, S, Ventura, G, Vignati, M, Wang, B S, Wang, H W, Whitten, C A, Wise, y T, Zarra, C, Zhu, B X, Zucchelli, S
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 01.02.2013
• Subjects: Bolometers; Dark matter; Energy spectra; Physics - Cosmology and Nongalactic Astrophysics; Physics - High Energy Physics - Experiment; Physics - Instrumentation and Detectors; Physics - Nuclear Experiment; Tellurium dioxide
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1209.2519

We collected 19.4 days of data from four 750 g TeO2 bolometers, and in three of them we were able to set the energy threshold around 3 keV using a new analysis technique. We found a background rate ranging from 25 cpd/keV/kg at 3 keV to 2 cpd/keV/kg at 25 keV, and a peak at 4.7 keV. The origin of this peak is presently unknown, but its presence is confirmed by a reanalysis of 62.7 kg.days of data from the finished CUORICINO experiment. Finally, we report the expected sensitivities of the CUORE0 (52 bolometers) and CUORE (988 bolometers) experiments to a WIMP annual modulation signal.