Scientific Results

Results from cuoricino experiment and prospects for cuore

Year: 2006

Authors: Pedretti M., Ardito R., Arnaboldi C., Artusa D.R., Avignone III F.T., Balata M., Bandac I., Barucci M., Beeman J.W., Bellini F., Brofferio C., Bucci C., Capelli S., Capozzi F., Carbone L., Cebrian S., Clemenza M., Cosmelli C., Cremonesi O., Creswick R.J., Dafinei I., De Waard A., Diemoz M., Dolinski M., Farach H.A., Ferroni F., Fiorini E., Gargiulo C., Guardincerri E., Giuliani A., Gorla P., Gutierrez T.D., Haller E.E., Irastorza I.G., Longo E., Maier G., Maruyama R., Morganti S., Nisi S., Nones C., Norman E.B., Nucciotti A., Olivieri E., Ottonello P., Pallavicini M., Palmieri V., Pavan M., Pessina G., Pirro S., Previtali E., Quiter B., Risegari L., Rosenfeld C., Sangiorgio S., Sisti M., Smith A.R., Torres L., Ventura G., Xu N., Zanotti L.

Autors Affiliation: Dipartimento di Fisica, Universita di Milano-Bicocca, Sezione di Milano dell\’INFN, Milano I-20126, Italy; Dipartimento di Ingegneria Strutturale, Politecnico di Milano, Milano I-20133, Italy; Dept.of Physics and Astronomy, University of South Carolina, Columbia, SC 29208, United States; Laboratori Nazionali Del Gran Sasso, 1-67010, Assergi (L\’Aquila), Italy; Dipartimento di Fisica, Dell\’Universita di Firenze e Sezione di Firenze Dell\’INFN, Firenze 1-50125, Italy; Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, United States; Laboratorio de Fisica Nuclear y Altas Energias, Universidad de Zaragoza, 50009 Zaragoza, Spain; Kamerling Onnes Laboratory, Leiden University, 2300 RAQ, Leiden, Netherlands; Dipartimento di Fisica, Matematica Dell\’Universita Dell\’Insubria, Sezione di Milano Dell\’INFN, Como 1-22100, Italy; Dipartimento di Fisica, Dell\’Universita di Genova, Sezione di Gen-ova Dell\’INFN, Genova 1-16146, Italy; University of California, Berkeley, CA 94720, United States; Laboratori Nazionali di Legnaro, 1-35020 Legnaro (Padova), Italy; Lawrence Livermore National Laboratory, Livermore, CA, 94550, United States; Dipartimento di Fisica, Universita di Roma, Sezione di Roma 1 dell\’INFN, Roma I-16146, Italy

Abstract: Cuoricino is a taking data bolometric experiment searching for neutrinoless double beta decay (0vDBD) of 130Te. The detector consists of an array of large cubic Te02 crystal bolometers. Cuoricino works at about 10 mK in the Gran Sasso Underground Laboratory. Good energy resolutions were obtained (2.1 keV at 911 keV and 3.9 keV at 2615 keV at best). The counting rate in the region of 0vDBD is 0.18±0.02 c/keV/kg/y. The limit for the 0vDBD half lifetime is 2.0 ± 1024 years at the 90% of C.L. This results correspond to a limit for the effective neutrino mass between 0.2 and 1.0 eV, depending on the nuclear matrix elements used. A large international collaboration is working on CUORE project, a future experiment with a mass of 741 kg of TeO2 crystal bolometers. The experiment aims to probe the neutrino absolute mass down to 50 meV and to understand if the inverted hierarchy holds in the neutrino mass pattern.

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KeyWords: e da rivista: Counting rates; Energy resolutions; Half lifetime; International collaborations; Neutrino mass; Neutrinoless double-beta decays; Nuclear matrix elements; Underground laboratory, Bolometers; Experiments; Infrared detectors; International cooperation; Neutrons, Particle detectors
DOI: 10000000000

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