Limit on the radiative neutrinoless double electron capture of Ar-36 from GERDA Phase I

作者：Agostini M^*; Allardt M; Bakalyarov A M; Balata M; Barabanov I; Barros N; Baudis L; Bauer C; Bellotti E; Belogurov S; Belyaev S T; Benato G; Bettini A; Bezrukov L; Bode T; Borowicz D; Brudanin V; Brugnera R; Caldwell A; Cattadori C; Chernogorov A; D'Andrea V; Demidova E V; di Vacri A; Domula A; Doroshkevich E; Egorov V; Falkenstein R; Fedorova O; Freund K; Frodyma N; Gangapshev A; Garfagnini A; Gooch C; Grabmayr P

来源：European Physical Journal C, 2016, 76(12): 652.

DOI：10.1140/epjc/s10052-016-4454-5

Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number vio-lation and the Majorana nature of neutrinos. A search for neutrinoless double electron capture of 36Ar has been performed with germanium detectors installed in liquid argon using data from Phase I of the GERmanium Detector Array (Gerda) experiment at the Gran Sasso Laboratory of INFN, Italy. No signalwas observed and an experimental lower limit on the half-life of the radiative neutrinoless double electron capture of Ar-36 was established: T-1/2 > 3.6 x 10(21) years at 90% CI.

• 出版日期2016-11-28