1. First results of the experiment to search for 2β decay of 106Cd with the help of 106 CdWO4 crystal scintillators
- Author
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P. Belli, R. Bernabei, R. S. Boiko, V. B. Brudanin, F. Cappella, V. Caracciolo, R. Cerulli, D. M. Chernyak, F. A. Danevich, S. d’Angelo, A. E. Dossovitskiy, E. N. Galashov, A. Incicchitti, V. V. Kobychev, S. S. Nagorny, F. Nozzoli, B. N. Kropivyansky, V. M. Kudovbenko, A. L. Mikhlin, A. S. Nikolaiko, D. V. Poda, R. B. Podviyanuk, O. G. Polischuk, D. Prosperi, V. N. Shlegel, Yu. G. Stenin, J. Suhonen, V. I. Tretyak, Ya. V. Vasiliev, Livius Trache, Alexei Smirnov, and Sabin Stoica
- Subjects
Physics ,Nuclear physics ,Massless particle ,Crystal ,Double beta decay ,Isotopes of cadmium ,Settore FIS/01 - Fisica Sperimentale ,Neutrino ,Scintillator ,Radioactive decay ,Lepton ,Settore FIS/04 - Fisica Nucleare e Subnucleare - Abstract
An experiment to search for 2b processes in 106Cd with the help of 106CdWO4 crystal scintillator (mass of 215 g), enriched in 106Cd up to 66%, is in progress at the Gran Sasso National Laboratories of the INFN (Italy). After 1320 h of data taking, limits on double beta processes in 106Cd have been established on the level of 1019–1020 yr, in particular (all the results at 90% C.L.): T1/2(0ν2e)>3.6×1020 yr, T1/2(2νeβ+)>7.2×1019 yr, and T1/2(2ν2β+)>2.5×1020 yr. Resonant 0ν2e processes have been restricted as T1/2(0ν2K)>1.4×1020 yr and T1/2(0νLK)>3.2×1020 yr. A possible resonant enhancement of the 0ν2e processes is estimated in the framework of the QRPA approach.
- Published
- 2010