Preliminary results on double beta decay (DBD) of 130Te, obtained in the first run of the CUORICINO experiment are presented. The set-up consists of an array of 62 crystals of TeO2 operating as bolometers in a deep underground dilution unit at a temperature of about 10 mK. Due to a total mass of about 41 kg, CUORICINO represents by far the most massive running cryogenic mass to search for rare events. The achieved lower limit on the neutrinoless DBD is 5.5·1023 years, that corresponds to a limit on the Majorana effective mass between 0.37 and 1.9 eV. Performances of the detectors together with the sensitivity estimation are discussed. © 2004 Elsevier B.V. All rights reserved.
Pirro, S., Arnaboldi, C., Artusa, D., Avignone, F., Balata, M., Bandac, I., et al. (2005). First results of the CUORICINO experiment. Intervento presentato a: 8th International Workshop on Topics in Astroparticle and Underground Physics, Seattle, USA [10.1016/j.nuclphysbps.2004.11.050].
First results of the CUORICINO experiment
BROFFERIO, CHIARA;CAPELLI, SILVIA;Cremonesi, O;FIORINI, ETTORE;NUCCIOTTI, ANGELO ENRICO LODOVICO;PAVAN, MAURA;Pessina, G;Previtali, E;SISTI, MONICA;
2005
Abstract
Preliminary results on double beta decay (DBD) of 130Te, obtained in the first run of the CUORICINO experiment are presented. The set-up consists of an array of 62 crystals of TeO2 operating as bolometers in a deep underground dilution unit at a temperature of about 10 mK. Due to a total mass of about 41 kg, CUORICINO represents by far the most massive running cryogenic mass to search for rare events. The achieved lower limit on the neutrinoless DBD is 5.5·1023 years, that corresponds to a limit on the Majorana effective mass between 0.37 and 1.9 eV. Performances of the detectors together with the sensitivity estimation are discussed. © 2004 Elsevier B.V. All rights reserved.
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