2005-09-30 New Limit on the Neutrinoless ββ Decay of Te-130

Author: 

C. Arnaboldi et al. (Cuoricino Collaboration)

Journal: 
Physical Review Letters
Year: 
2005
Volume: 
95
Page: 
142501
DOI: 
10.1103/PhysRevLett.95.142501
arXiv: 
hep-ex/0501034
Title: 

New Limit on the Neutrinoless ββ Decay of Te-130

Abstract (for collaboration papers): 

We report the present results of CUORICINO, a search for neutrinoless double-beta (0νββ) 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 0νββ decay was found and a new lower limit, T1/2≥1.8 × 1024   yr (90% C.L.) is set, corresponding to ≤mν ≥ 0.2 to 1.1 eV, depending on the theoretical nuclear matrix elements used in the analysis.