Search for double beta decay of $^{116}$Cd with enriched $^{116}$CdWO$_4$ crystal scintillators (Aurora experiment)
- Danevich, F.A.
- Barabash, A.S.
- Belli, P.
- Bernabei, R.
- Cappella, F.
- Caracciolo, V.
- Cerulli, R.
- Chernyak, D.M.
- d'Angelo, S.
- Incicchitti, A.
- Kobychev, V.V.
- Konovalov, S.I.
- Laubenstein, M.
- Mokina, V.M.
- Poda, D.V.
- Polischuk, O.G.
- Shlegel, V.N.
- Tretyak, V.I.
- Umatov, V.I.
DOIAbstract
International audienceThe Aurora experiment to investigate double beta decay of (116) Cd with the help of 1.162 kg cadmium tungstate crystal scintillators enriched in (116) Cd to 82% is in progress at the Gran Sasso Underground Laboratory. The half-life of (116) Cd relatively to the two neutrino double beta decay is measured with the highest up-to-date accuracy T(1/2) = (2.62 ± 0.14) × 10(19) yr. The sensitivity of the experiment to the neutrinoless double beta decay of (116) Cd to the ground state of (116) Sn is estimated as T(1/2) ≥ 1.9 × 10(23) yr at 90% CL, which corresponds to the effective Majorana neutrino mass limit (mv) ≤ (1.2 — 1.8) eV. New limits are obtained for the double beta decay of (116) Cd to the excited levels of (116) Sn...
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