Limit on the radiative neutrinoless double electron capture of [Formula omitted]Ar from GERDA Phase I

Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number violation and the Majorana nature of neutrinos. A search for neutrinoless double electron capture of [Formula omitted]Ar has been performed with germanium detectors installed in liquid argon usi...

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Bibliographic Details
Published in:	The European physical journal. C, Particles and fields Particles and fields, 2016-12, Vol.76 (12), p.1-6
Main Authors:	Agostini, M, Allardt, M, Bakalyarov, A. M, Balata, M, Barabanov, I, Barros, N, Baudis, L
Format:	Article
Language:	eng
Subjects:	Beta decay Detection equipment Electron capture Electrons Leptons Neutrinos
Online Access:	Get full text
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Summary:	Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number violation and the Majorana nature of neutrinos. A search for neutrinoless double electron capture of [Formula omitted]Ar 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 signal was observed and an experimental lower limit on the half-life of the radiative neutrinoless double electron capture of [Formula omitted]Ar was established: [Formula omitted] 3.6 [Formula omitted] 10 [Formula omitted] years at 90% CI.
ISSN:	1434-6044 1434-6052