Details

Autor(en) / Beteiligte

• Polischuk, O. G.
• Barabash, A. S.
• Belli, P.
• Bernabei, R.
• Cappella, F.
• Caracciolo, V.
• Cerulli, R.
• Chernyak, D. M.
• Danevich, F. A.
• d’Angelo, S.
• Incicchitti, A.
• Kasperovych, D. V.
• Kobychev, V. V.
• Konovalov, S. I.
• Laubenstein, M.
• Mokina, V. M.
• Poda, D. V.
• Shlegel, V. N.
• Tretyak, V. I.
• Umatov, V. I.
• Vasiliev, Ya. V.
• Stekl, Ivan
• Suhonen, Jouni
• Civitarese, Osvaldo

Titel

Investigation of 2β decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators

Ist Teil von

• AIP Conference Proceedings, 2017, Vol.1894 (1)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2017

Beschreibungen/Notizen

• Double beta decay of 116Cd has been investigated with the help of radiopure enriched 116CdWO4 crystal scintillators in the experiment Aurora. The half-life of 116Cd relatively to the 2ν2β decay of 116Cd to the ground level of 116Sn is measured with the highest up-to-date accuracy as T 1/2 = [2.69 ± 0.02 (stat.) ± 0.14 (syst.)] × 1019 yr. A new improved limit on the 0ν2β decay of 116Cd to the ground state of 116Sn is set as T 1/2 ≥ 2.4 × 1023 yr at 90% C.L., that corresponds to the effective Majorana neutrino mass limit in the range 〈m ν〉 ≤ (1.1 − 1.6) eV, depending on the nuclear matrix elements used in the estimations. New improved limits on other 2β processes in 116Cd (decays with majoron emission, transitions to excited levels of 116Sn) were set at the level of T 1/2 ≥ 1021 − 1022 yr.