1. New limit on the neutrinoless betabeta decay of 130Te.
- Author
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Arnaboldi C, Artusa DR, Avignone FT 3rd, Balata M, Bandac I, Barucci M, Beeman JW, Brofferio C, Bucci C, Capelli S, Carbone L, Cebrian S, Cremonesi O, Creswick RJ, de Waard A, Farach HA, Fiorini E, Frossati G, Guardincerri E, Giuliani A, Gorla P, Haller EE, McDonald RJ, Morales A, Norman EB, Nucciotti A, Olivieri E, Pallavicini M, Palmieri E, Pasca E, Pavan M, Pedretti M, Pessina G, Pirro S, Previtali E, Risegari L, Rosenfeld C, Sangiorgio S, Sisti M, Smith AR, Torres L, and Ventura G
- Abstract
We report the present results of CUORICINO, a search for neutrinoless double-beta (0nu betabeta) decay of 130Te. The detector is an array of 62 TeO2 bolometers with a total active mass of 40.7 kg. The array is cooled by a dilution refrigerator shielded from environmental radioactivity and energetic neutrons, operated at approximately 8 mK in the Gran Sasso Underground Laboratory. No evidence for (0nu betabeta) decay was found and a new lower limit, T(1/2)(0nu) > or = 1.8 x 10(24) yr (90% C.L.) is set, corresponding to [m(nu)] < or = 0.2 to 1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis.
- Published
- 2005
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