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26 April 2024

» pubmed » pmid16241648

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New limit on the neutrinoless betabeta decay of 130Te
C Arnaboldi ; D R Artusa ; F T Avignone ; M Balata ; I Bandac ; M Barucci ; J W Beeman ; C Brofferio ; C Bucci ; S Capelli ; L Carbone ; S Cebrian ; O Cremonesi ; R J Creswick ; A de Waard ; H A Farach ; E Fiorini ; G Frossati ; E Guardincerri ; A Giuliani ; P Gorla ; E E Haller ; R J McDonald ; A Morales ; E B 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 R Smith ; L Torres ; G Ventura ;
Date:	30 Sep 2005
Journal:	Phys Rev Lett, 95 (14), 142501
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.
Source:	PubMed, pmid16241648
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