New CUORICINO results and status of CUORE
| Autor: | C. Rosenfeld, P. Gorla, F. Ferroni, Eugene E. Haller, C. Bucci, Simone Capelli, C. Nones, Silvio Morganti, R. J. Creswick, Eric B. Norman, Massimiliano Clemenza, Carlo Cosmelli, Ettore Fiorini, E. Palmieri, M. Balata, O. Cremoniesi, C. Brofferio, H. A. Farach, T. D. Gutierrez, E. Olivieri, L. Carbone, L. Zanotti, M. Pedretti, F. T. Avignone, P. Ottonello, Marco Barucci, A. de Waard, D. R. Artusa, L. Torres, Monica Sisti, E. Longo, Giulio Maier, R. Maruyama, Marco Pallavicini, G. Pessina, F. Capozzi, B. Quiter, C. Gargiulo, C. Arnaboldi, Samuele Sangiorgio, Stefano Nisi, F. Bellini, A. Nucciotti, Alan R. Smith, E. Guardincerri, N. Xu, A. Giuliani, Ioan Dafinei, S. Pirro, I. C. Bandac, M. J. Dolinski, S. Cebrián, M. Pavan, Lara Risegari, Raffaele Ardito, Ezio Previtali, G. Ventura, I. G. Irastorza, Jeffrey W. Beeman |
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| Přispěvatelé: | Cremonesi, O, Ardito, R, Arnaboldi, C, Artusa, D, Avignone, F, Balata, M, Bandac, I, Barucci, M, Beeman, J, Bellini, F, Brofferio, C, Bucci, C, Capelli, S, Capozzi, F, Carbone, L, Cebrian, S, Clemenza, M, Cosmelli, C, Creswick, R, Dafinei, I, Waard, A, Dolinski, M, Farach, H, Ferroni, F, Fiorini, E, Gargiulo, C, Guardincerri, E, Giuliani, A, Gorla, P, Gutierrez, T, Haller, E, Irastorza, I, Longo, E, Maier, G, Maruyama, R, Morganti, S, Nisi, S, Nones, C, Norman, E, Nucciotti, A, Olivieri, E, Ottonello, P, Pallavicini, M, Palmieri, E, Pavan, M, Pedretti, M, Pessina, G, Pirro, S, Previtali, E, Quiter, B, Risegari, L, Rosenfeld, C, Sangiorgio, S, Sisti, M, Smith, A, Torres, L, Ventura, G, Xu, N, Zanotti, L |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Bolometer Bolometers Double Beta Decay Neutrino mass Atomic and Molecular Physics and Optics Particle detector law.invention Nuclear physics Massless particle CUORE law Double beta decay Neutrino Energy source Radioactive decay FIS/04 - FISICA NUCLEARE E SUBNUCLEARE |
| Popis: | CUORICINO is an array of 62 TeO2 bolometers with a total mass of 40.7 kg (11.2 kg of 130Te), operated at about 10 mK to search for ββ(0ν) of 130Te. The detectors are organized as a 14-story tower and intended as a slightly modified version of one of the 19 towers of the CUORE project, a proposed tightly packed array of 988 TeO2 bolometers (741 kg of total mass of TeO2) for ultralow-background searches on neutrinoless double-beta decay, cold dark matter, solar axions, and rare nuclear decays. Started in April 2003 at the Laboratori Nazionali del Gran Sasso (LNGS), CUORICINO data taking was stopped in November 2003 to repair the readout wiring system of the 62 bolometers. Restarted in spring 2004, CUORICINO is presently the most sensitive running experiment on neutrinoless double-beta decay. No evidence for ββ(0ν) decay has been found so far and a new lower limit, T 1 2/0 ≥ 1.8 × 1024 yr (90% C.L.), is set, corresponding to 〈m ν〉 ≤ 0.2–1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis. Detector performance, operational procedures, and background analysis results are reviewed. The expected performance and sensitivity of CUORE is also discussed. |
| Databáze: | OpenAIRE |
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