Measuring neutrino mass with radioactive ions in a storage ring

Abstract

We propose a method to measure the neutrino mass kinematically using beams of ions which undergo beta decay. The idea is to tune the ion beam momentum so that in most decays, the electron is forward moving with respect to the beam, and only in decays near the endpoint is the electron moving backwards. Then, by counting the backward moving electrons one can observe the effect of neutrino mass on the beta spectrum close to the endpoint. In order to reach sensitivities for $m_{\nu }<0.2$ eV, it is necessary to control the ion momentum with a precision better than $\delta p/p<10^{-5}$, identify suitable nuclei with low Q-values (in the few to ten keV range), and one must be able to observe at least O($10^{18}$) decays.

20 pages, 8 figures

References in corpus (7)

• Measurement of Neutrino Oscillation by the K2K Experiment
• Three-flavour neutrino oscillation update
• Neutrino mass limit from tritium beta decay
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Cited by in corpus (4)

• keV Neutrino Model Building
• EURONU WP6 2009 yearly report: Update of the physics potential of Nufact, superbeams and betabeams
• Ultra-low Q values for neutrino mass measurements
• Constraints on the Active and Sterile Neutrino Masses from Beta-Ray Spectra: Past, Present and Future