Neutrino signals in electron-capture storage-ring experiments

Abstract

Neutrino signals in electron-capture decays of hydrogen-like parent ions P in storage-ring experiments at GSI are reconsidered, with special emphasis placed on the storage-ring quasi-circular motion of the daughter ions D in two-body decays P --> D + e-neutrino. It is argued that to the extent that daughter ions are detected, these detection rates might exhibit modulations with periods of order seconds, similar to those reported in the GSI storage-ring experiments for two-body decay rates [1,2]. New dedicated experiments in storage rings, or using traps, could explore these modulations.

Presented first at the EMMI-RRTF Workshop, Jena/Dornburg, July 6-9 2014, and revised substantially since then; this final arXiv version includes footnotes that were excluded from the published version

References in corpus (8)

• Observation of Non-Exponential Orbital Electron Capture Decays of Hydrogen-Like ${}^{140}$Pr and ${}^{142}$Pm Ions
• High-resolution measurement of the time-modulated orbital electron capture and of the ${\beta }^{+}$ decay of hydrogen-like ${}^{142}$Pm${}^{60+}$ ions
• Rates of Processes with Coherent Production of Different Particles and the GSI Time Anomaly
• On the time modulation of the K-shell electron capture decay rates of H-like heavy ions at GSI experiments
• Search for Oscillation of the Electron-Capture Decay Probability of ${}^{142}$Pm
• The GSI anomaly
• Which is the Quantum Decay Law of Relativistic Particles?
• Decay Oscillations in Electron Capture and the Neutrino Mass Difference

Cited by in corpus (3)

• Heavy-Ion Storage Rings and Their Use in Precision Experiments with Highly Charged Ions
• New Test of Modulated Electron Capture Decay of Hydrogen-Like ${}^{142}$Pm Ions: Precision Measurement of Purely Exponential Decay
• Analysis of quantum decay law: Is quantum tunneling really exponential?