New Limit on the Neutrinoless \u3b2\u3b2 Decay of Te130
- C. Arnaboldi
- D. Artusa
- F. Avignone
- M. Balata
- I. Bandac
- M. Barucci
- J. Beeman
- C. Brofferio
- C. Bucci
- S. Capelli
- L. Carbone
- S. Cebrian
- O. Cremonesi
- R. Creswick
- A. de Waard
- H. Farach
- E. Fiorini
- G. Frossati
- E. Guardincerri
- A. Giuliani
- P. Gorla
- E. Haller
- R. McDonald
- A. Morales
- E. Norman
- A. Nucciotti
- E. Olivieri
- M. Pallavicini
- E. Palmieri
- E. Pasca
- M. Pavan
- M. Pedretti
- G. Pessina
- S. Pirro
- E. Previtali
- L. Risegari
- C. Rosenfeld
- S. Sangiorgio
- M. Sisti
- A. Smith
- L. Torres
- G. Ventura
Publication date
January 2005
DOI Publisher
American Physical Society (APS) ISSN
0031-9007Abstract
We report the present results of CUORICINO, a search for neutrinoless double-beta (0nubb) 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 ~8 mK in the Gran Sasso Underground Laboratory. No evidence for 0nubb decay was found and a new lower limit, T1/2 > 1.8 10**24 yr (90% C.L.) is set, corresponding to mnu < 0.2 to 1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis
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