The current status of "Troitsk nu-mass" experiment in search for sterile neutrino

Abstract

We propose a new experiment to search for a sterile neutrino in a few keV mass range at the "Troitsk nu-mass" facility. The expected signature corresponds to a kink in the electron energy spectrum in tritium beta-decay. The new goal compared to our previous experiment will be precision spectrum measurements well below end point. The experimental installation consists of a windowless gaseous tritium source and a high resolution electromagnetic spectrometer. We estimate that the current bounds on the sterile neutrino mixing parameter can be improved by an order of magnitude in the mass range under 5 keV without major upgrade of the existing equipment. Upgrades of calibration, data acquisition and high voltage systems will allow to improve the bounds by another order of magnitude.

19 pages, 11 figures

References in corpus (3)

• The Reactor Antineutrino Anomaly
• Statistical Significance of the Gallium Anomaly
• Sensitivity of Next-Generation Tritium Beta-Decay Experiments for keV-Scale Sterile Neutrinos

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• Prospects for Finding Sterile Neutrino Dark Matter at KATRIN
• Two simple textures of the magic neutrino mass matrix
• Measurements with a TRISTAN prototype detector system at the "Troitsk nu-mass" experiment in integral and differential mode
• Constraints on the Active and Sterile Neutrino Masses from Beta-Ray Spectra: Past, Present and Future
• Electron scattering on hydrogen and deuterium molecules at 14-25 keV by the "Troitsk nu-mass" experiment
• The role of electron scattering from registration detector in a MAC-E type spectrometer
• Shape-based event pileup separation in Troitsk nu-mass experiment
• Calibration of Troitsk nu-mass detector readout electronics by signal digital filters
• Electron evaporation from magnetic trap in Troitsk nu-mass experiment