Search for double-β decay of 130Te to the first 0+ excited state of 130Xe with the CUORICINO experiment bolometer array

E. Andreotti et al.
Phys. Rev. C 85, 045503 – Published 16 April 2012

Abstract

The CUORICINO experiment was an array of 62 TeO2 single-crystal bolometers with a total 130Te mass of 11.3kg. The experiment finished in 2008 after more than 3 yr of active operating time. Searches for both 0ν and 2ν double-β decay to the first excited 0+ state in 130Xe were performed by studying different coincidence scenarios. The analysis was based on data representing a total exposure of N(130Te)·t=9.5×1025yr. No evidence for a signal was found. The resulting lower limits on the half-lives are T122ν(130Te130Xe*)>1.3×1023yr (90% C.L.), and T120ν(130Te130Xe*)>9.4×1023yr (90% CL).

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  • Received 23 August 2011

DOI:https://doi.org/10.1103/PhysRevC.85.045503

©2012 American Physical Society

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Vol. 85, Iss. 4 — April 2012

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