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Cuoricino results for 2 nbb decay to the first excited state 0 +

Cuoricino results for 2 nbb decay to the first excited state 0 +. Sergio Di Domizio for the Cuoricino Collaboration Università and INFN Genova. Athens , June 13-19 2010. Cuoricino. Cuoricino collected data at the Laboratori Nazionali del Gran Sasso between 2003 and 2008

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Cuoricino results for 2 nbb decay to the first excited state 0 +

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  1. Cuoricino resultsfor 2nbbdecayto the first excited state 0+ Sergio Di Domizio for the Cuoricino Collaboration Università and INFN Genova Athens, June 13-19 2010

  2. Cuoricino • Cuoricino collected data at the Laboratori Nazionali del Gran Sasso between 2003 and 2008 • Itisanarrayof5x5x5 cm3 TeO2 cryogenicbolometersdevotedto the searchof 0nbbdecay in 130Te • Cuoricino has a mass of 42 kg (11.8 kg in 130Te) • The accumulatedstatisticsis19.8 kg∙y in 130Te • The averageenergyresolutionis 7 keV FWHM at 2.6 MeV

  3. 130Te 2nbbdecayto the excited state 0+ Coincidencebasedanalysis: strong background reduction 2 de-excitationgsemitted CUORICINO RESULT: T1/2 > 1.4 x 1023 y (90% C.L.) More details in the poster

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