Searches for neutrinoless resonant double electron captures at LNGS

P. Belli (1) , R. Bernabei (1 , 2) , R. S. Boiko (3) , V. B. Brudanin (4) , F. Cappella (5 , 6) , V. Caracciolo (7

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8) R. Cerulli (7) D. M. Chernyak (3) F. A. Danevich (3) S. d'Angelo (1) A. Di Marco (1) M. L. Di Vacri (7) E. N. Galashov (9) A. Incicchitti (5 V. V. Kobychev (3) G. P. Kovtun (10) N. G. Kovtun (10) V. M. Mokina (3) M. Laubenstein (7) S. S. Nagorny (3) S. Nisi (7) D. V. Poda (3 7) R. B. Podviyanuk (3) O. G. Polischuk (3) D. Prosperi (5 A. P. Shcherban (10) V. N. Shlegel (9) D. A. Solopikhin (10) Yu. G. Stenin (9 13) J. Suhonen (11) A. V. Tolmachev (12) V. I. Tretyak (3) Ya. V. Vasiliev (9) R. P. Yavetskiy (12) ((1) INFN Roma Tor Vergata (2) Univ. Roma Tor Vergata (3) INR Kiev (4) JINR Dubna (5) INFN Roma (6) Univ. Roma (7) INFN LNGS (8) Univ. L'Aquila (9) NIIC Novosibirsk (10) NSC Kharkiv (11) Univ. Jyvaskyla (12) ISC Kharkiv)

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classification ⚛️ nucl-ex

keywords captureslngsresonantvarepsilon0werecdwo4crystaldecays

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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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Searches for neutrinoless resonant double electron captures at LNGS

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