Constraints on Neutrino Lifetime from the Sudbury Neutrino Observatory

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Abstract

The long baseline between Earth and the Sun makes solar neutrinos an excellent test beam for exploring possible neutrino decay. The signature of such decay would be an energy-dependent distortion of the traditional survival probability which can be fit for using well-developed and high-precision analysis methods. Here a model including neutrino decay is fit to all three phases of B8 solar neutrino data taken by the Sudbury Neutrino Observatory (SNO). This fit constrains the lifetime of neutrino mass state ν2 to be >8.08×10-5 s/eV at 90% confidence. An analysis combining this SNO result with those from other solar neutrino experiments results in a combined limit for the lifetime of mass state ν2 of >1.92×10-3 s/eV at 90% confidence.

Original languageEnglish
Article number032013
Pages (from-to)032013
Number of pages1
JournalPhys.Rev.D
Volume99
Issue number3
DOIs
Publication statusE-pub ahead of print - 25 Feb 2019

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