A search for the radiative neutrinoless double electron capture of ${}^{58}$Ni

Abstract

A search for the radiative neutrinoless double electron capture with single \gray\ emission has been performed in ${}^{58}$Ni. Gamma radiation from a 7286 g nickel sample in natural isotope composition was measured for 58.3 d with an ultra low background HPGe detector in the Felsenkeller underground laboratory in Dresden, Germany. A new lower half-life limit of $2.1\times 10^{21}$ yr (90% CL) was obtained for this decay mode. This half-life limit is two orders of magnitude higher than the existing limit for ${}^{58}$Ni and among the best half-life limits for neutrinoless double electron capture decays.

References in corpus (14)

• A Unified Approach to the Classical Statistical Analysis of Small Signals
• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Neutrino-less Double Beta Decay and Particle Physics
• Solar neutrino measurements in Super-Kamiokande-II
• Independent Measurement of the Total Active 8B Solar Neutrino Flux Using an Array of 3He Proportional Counters at the Sudbury Neutrino Observatory
• Atmospheric neutrino oscillation analysis with sub-leading effects in Super-Kamiokande I, II, and III
• Neutrinoless double beta decay and neutrino physics
• Observation of a first ${\nu }_{\tau }$ candidate in the OPERA experiment in the CNGS beam
• \textsc{MaGe} - a {\sc Geant4}-based Monte Carlo Application Framework for Low-background Germanium Experiments
• Neutrino-less Double Electron Capture - a tool to research for Majorana neutrinos
• Neutrinoless double electron capture
• MINOS neutrino oscillation results
• Neutrino Masses

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