cuoricino results for 2 decay to the first excited state 0 + sergio di domizio for the cuoricino...
TRANSCRIPT
Cuoricino results for 2nbb 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
• It is an array of 5x5x5 cm3 TeO2 cryogenic bolometers devoted to the search of 0nbb decay in 130Te
• Cuoricino has a mass of 42 kg (11.8 kg in 130Te)
• The accumulated statistics is 19.8 kg y in ∙ 130Te
• The average energy resolution is 7 keV FWHM at 2.6 MeV
130Te 2nbb decay to the excited state 0+
T1/2 > 1.4 x 1023 y (90% C.L.)
2 de-excitation gs emittedCoincidence based analysis:
strong background reduction
CUORICINO RESULT:
More details in the poster