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arXiv · 1201.4581

Searches for neutrinoless resonant double electron captures at LNGS

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. Di Marco·M. L. Di Vacri·E. N. Galashov·A. Incicchitti·V. V. Kobychev·G. P. Kovtun·N. G. Kovtun·V. M. Mokina·M. Laubenstein·S. S. Nagorny·S. Nisi·D. V. Poda·R. B. Podviyanuk·O. G. Polischuk·D. Prosperi·A. P. Shcherban·V. N. Shlegel·D. A. Solopikhin·Yu. G. Stenin·J. Suhonen·A. V. Tolmachev·V. I. Tretyak·Ya. V. Vasiliev·R. P. Yavetskiy
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Abstract

Several experiments were performed during last years at underground (3600 m w.e.) Laboratori Nazionali del Gran Sasso (LNGS) of the INFN (Italy) to search for resonant 2$\varepsilon0\nu$ captures in 96Ru, 106Cd, 136Ce, 156Dy, 158Dy, 180W, 184Os, 190Pt with the help of HP Ge semiconductor detectors, and ZnWO4 and 106CdWO4 crystal scintillators. No evidence for r-2$\varepsilon0\nu$ decays was found, and only T_{1/2} limits were established in the range of 10^{14}-10^{21} yr.

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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. Di Marco, M. L. Di Vacri, E. N. Galashov, A. Incicchitti, V. V. Kobychev, G. P. Kovtun, N. G. Kovtun, V. M. Mokina, M. Laubenstein, S. S. Nagorny, S. Nisi, D. V. Poda, R. B. Podviyanuk, O. G. Polischuk, D. Prosperi, A. P. Shcherban, V. N. Shlegel, D. A. Solopikhin, Yu. G. Stenin, J. Suhonen, A. V. Tolmachev, V. I. Tretyak, Ya. V. Vasiliev, R. P. Yavetskiy. 2012-01-22. Searches for neutrinoless resonant double electron captures at LNGS. https://doi.org/10.1088/1742-6596/375/1/042024

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