We report the present results of CUORICINO, a search for neutrinoless double-beta (0ÎÎÎ) decay of Te130. 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 â8mK in the Gran Sasso Underground Laboratory. No evidence for (0ÎÎÎ) decay was found and a new lower limit, T1/20Î≥1.8Ã-1024yr (90% C.L.) is set, corresponding to âmÎâ©â‰0.2 to 1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis. © 2005 The American Physical Society.
Arnaboldi, C., Artura, D., Avignone III, F., Balata, M., Bandac, I., Barucci, M., et al. (2005). New Limit on the Neutrinoless BetaBeta Decay of 130Te. PHYSICAL REVIEW LETTERS, 95(14) [10.1103/PhysRevLett.95.142501].
New Limit on the Neutrinoless BetaBeta Decay of 130Te
BROFFERIO, CHIARA;CAPELLI, SILVIA;Cremonesi, O;FIORINI, ETTORE;NUCCIOTTI, ANGELO ENRICO LODOVICO;PAVAN, MAURA;Pessina, G;Previtali, E;SISTI, MONICA;
2005
Abstract
We report the present results of CUORICINO, a search for neutrinoless double-beta (0ÎÎÎ) decay of Te130. 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 â8mK in the Gran Sasso Underground Laboratory. No evidence for (0ÎÎÎ) decay was found and a new lower limit, T1/20Î≥1.8Ã-1024yr (90% C.L.) is set, corresponding to âmÎâ©â‰0.2 to 1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis. © 2005 The American Physical Society.
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